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Patents held by Philo T. Farnsworth |
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Date Filed |
Patent Title/Description |
Patent Number (After issue) |
Issue Date |
| 1/7/2027 | Television System | 1,773,980 | 8/20/1930 |
| 1/7/2027 | Light Valve (split and re-filed 11/07/27) | 1,806,935 | 5/26/1931 |
| 1/7/2027 | Electric Oscillator System | 1,758,359 | 5/13/1930 |
| *1/07/27 | Television Receiving System | 1,773,981 | 8/26/1930 |
| 1/9/2028 | Photoelectric Apparatus | 1,970,036 | 8/14/1934 |
| 1/9/2028 | Fundamental Dissector Case, Television Method | 2,168,768 | 8/8/1939 |
| *4/17/28 | Electrical Discharge Apparatus | 1,986,330 | 1/1/1935 |
| 4/25/2028 | Synchronizing System | 1,844,949 | 2/16/1932 |
| 11/26/2028 | Method and Apparatus For Television | 2,037,711 | 4/21/1936 |
| 3/11/2029 | Admittance Neutralization Amplifier | 1,986,331 | 1/1/1935 |
| 3/3/1930 | Electron Image Amplifier | 2,085,742 | 7/6/1937 |
| *5/05/30 | Television Scanning and Synchronizing System | 2,246,625 | 11/23/1937 |
| *5/05/30 | Slope Wave Generator (P.T.F. and H. Lubcke) | 2,059,219 | 11/3/1936 |
| 6/14/1930 | Electron Image Amplifier | 2,085,742 | 7/6/1937 |
| *6/14/30 | Thermionic Oscillograph | 2,009,846 | 11/23/1937 |
| 7/7/1930 | Dissector Target | 1,941,344 | 12/26/1933 |
| 12/4/1930 | System of Pulse Transmission | 2,026,379 | 12/31/1935 |
| 7/14/1931 | Projection Oscillight | 2,140,284 | 12/13/1938 |
| 7/14/1931 | Scanning and Synchronizing System | 2,051,372 | 8/18/1936 |
| 7/22/1931 | Thermionic Vacuum Tube | 1,975,143 | 10/2/1934 |
| 5/31/1932 | Luminescent Screen (P.T.F. and B.C. Gardner) | 2,098,000 | 11/2/1937 |
| *4/03/33 | Scanning Oscillator | 2,059,683 | 11/3/1936 |
| 2/8/1933 | Luminescent Screen and Method of Use | 2,104,253 | 1/4/1938 |
| 4/26/1933 | Image Dissector | 2,087,683 | 7/20/1937 |
| 10/7/1933 | Electron Multiplying Device | 2,071,515 | 2/23/1937 |
| 4/26/1933 | Image Dissector | Re21,504** | 7/9/1940 |
| 7/5/1934 | Oscillation Generator | 2,071,516 | 2/23/1937 |
| *11/05/34 | Scanning Means and Method | 2,280,572 | 4/21/1942 |
| 11/6/1934 | Projection Means | 2,143,145 | 1/10/1939 |
| 11/6/1934 | Projection Apparatus | 2,091,705 | 8/31/1937 |
| 3/9/1936 | Incandescent Light Source | 2,089,054 | 8/3/1937 |
| 3/12/1935 | Means of Electron Multiplication | 2,143,262 | 1/10/1939 |
| 3/12/1935 | Cathode Ray Tube | 2,149,045 | 2/28/1939 |
| 3/12/1935 | Oscillator (divided 4/26/37) | 2,174,488 | 9/26/1939 |
| 5/7/1935 | Incandescent Light Source (P.T.F and H. Bamford) | 2,066,070 | 12/29/1936 |
| 5/7/1935 | Multipactor Phase Control | 2,071,517 | 2/23/1937 |
| 5/7/1935 | Means For Producing Incandescent Images (Farnsworth and Bamford) | 2,155,478 | 4/25/1939 |
| 7/6/1935 | Means and Method of Image Analysis | 2,216,264 | 10/1/1940 |
| 7/6/1935 | Charge Storage Dissector | 2,140,695 | 12/20/1938 |
| 7/6/1935 | Cathode Ray Amplifier | 2,228,388 | 1/14/1941 |
| 7/6/1935 | Charge Storage Amplifier | 2,233,888 | 3/4/1941 |
| 7/15/1935 | Image Receiving Tube | 2,118,186 | 5/24/1938 |
| 8/10/1935 | Cathode Ray Amplifying Tube | 2,251,124 | 7/29/1941 |
| 9/7/1935 | Charge Storage Dissector Tube | 2,141,836 | 12/27/1938 |
| 9/7/1935 | Image Analysis Tube | 2,100,842 | 11/30/1937 |
| *9/14/35 | Charge Storage Tube | 2,100,841 | 11/30/1937 |
| 7/1/1935 | Electron Image Amplifier | 2,292,437 | 8/11/1942 |
| 2/10/1936 | Scanning Current Generator | 2,214,077 | 9/10/1940 |
| 2/11/1936 | Multipactor | 2,135,615 | 11/8/1938 |
| 2/24/1936 | Radiation Frequency Converter | 2,107,782 | 2/8/1938 |
| 3/9/1936 | Absorption Oscillator | 2,159,521 | 5/23/1939 |
| 3/24/1936 | Secondary Emission Electrode | 2,139,813 | 12/13/1938 |
| 5/16/1936 | Means and Method of Controlling Electron Multipliers | 2,140,832 | 12/20/1938 |
| 5/16/1936 | Means and Method of Producing Electron Multiplication | 2 ,204,479 | 6/11/1940 |
| 5/18/1936 | Electron Multiplier | Re20,759** | 6/14/1938 |
| 6/1/1936 | Cathode Ray Tube | 2,158,279 | 5/16/1939 |
| 6/1/1936 | Multi-Stage Multipactor | 2,141,837 | 12/27/1938 |
| 6/18/1936 | Concentric Multiplier | 2,147,934 | 2/21/1939 |
| 10/31/1936 | Repeater | 2,143,146 | 1/10/1939 |
| 7/11/1936 | Image Source | 2,213,070 | 8/30/1938 |
| 8/18/1936 | Means and Method of Operating Multipliers | 2,128,58 | 8/30/1938 |
| 8/18/1936 | Image Dissector | 2,216,265 | 10/1/1940 |
| 11/2/1936 | High Power Projection Oscillograph (P.T.F and F. Somers) | 2,109,289 | 2/22/1938 |
| 11/2/1936 | Beam Scanning Dissector | 2,124,057 | 7/19/1938 |
| 11/2/1936 | Cathode Ray Tube | 2,139,814 | 12/13/1938 |
| 11/4/1936 | Cold Cathode Electron Discharge Tube | 2,184,910 | 12/26/1939 |
| 11/9/1936 | Electron Multiplier (P.T.F and F. Somers) | 2,179,996 | 11/14/1939 |
| 11/9/1936 | Multiplier Oscillator | 2,137,528 | 11/22/1938 |
| 2/24/1936 | Multipactor Oscillator and Amplifier | 2,091,439 | 8/31/1937 |
| 3/22/1937 | Multiplier Coupling System | 2,140,285 | 12/13/1938 |
| 3/22/1937 | Split Cathode Multiplier | 2,217,860 | 10/15/1940 |