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Class Information
Number: 250/214LS
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controlled circuit > Special photocell or electron tube circuits > Amplifier type > Light amplifier type > Switching type
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4506151 |
Optoelectronic logic |
Mar. 19, 1985 |
| 4467325 |
Electro-optically addressed flat panel display |
Aug. 21, 1984 |
| 4305069 |
Personal smoke and fire detector and warning unit |
Dec. 8, 1981 |
| 4280125 |
Thin vacuum panel display device |
Jul. 21, 1981 |
| 4177354 |
Graphic communications apparatus |
Dec. 4, 1979 |
| 4093852 |
Laser addressed display |
Jun. 6, 1978 |
| 4085321 |
Multi-phase photoactivated switch |
Apr. 18, 1978 |
| 4083042 |
Continuous quantitative signal-display system using light-emitting elements |
Apr. 4, 1978 |
| 4051462 |
Computer memory |
Sep. 27, 1977 |
| 4035774 |
Bistable electroluminescent memory and display device |
Jul. 12, 1977 |
| 3996475 |
Photoelectric controlling |
Dec. 7, 1976 |
| 3995173 |
Solid state fail-safe logic system |
Nov. 30, 1976 |
| 3988536 |
Scanning apparatus for television display or pick-up |
Oct. 26, 1976 |
| 3984728 |
Image intensifier tube gating circuit |
Oct. 5, 1976 |
| 3958207 |
Injection current device and method |
May. 18, 1976 |
| 3947844 |
Apparatus for generating signals corresponding to characters to be displayed |
Mar. 30, 1976 |
| 3947842 |
Electro-optic matrix-type display panel incorporating optoelectronic addressing switches |
Mar. 30, 1976 |
| 3940620 |
Electrostatic recording of X-ray images |
Feb. 24, 1976 |
| 3940757 |
Method and apparatus for creating optical displays |
Feb. 24, 1976 |
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