|
US3675067A
|
|
Optical resonance cell with means for regulating internal vapor pressure
|
|
US3715478A
|
|
Secrecy facsimile system
|
|
GB1241503A
|
|
Improvements in or relating to heterodyne receivers
|
|
GB1208093A
|
|
Improvements in or relating to aerials
|
|
US3577069A
|
|
Optical resonance cells containing an alloy of an alkali metal with another metal
|
|
US3598979A
|
|
Digit sequence correlator
|
|
DE1817348A1
|
|
Arrangement for converting single-color images into colors
|
|
US3559093A
|
|
Noise generator employing a feedback path around two cascaded travellingwave tubes
|
|
US3588468A
|
|
Arrangement for making large-area homogeneous photocathodes in vacuum tubes
|
|
US3585981A
|
|
High-precision uniform clamping device
|
|
DE1809898A1
|
|
Optical system with variable focal length
|
|
DE1807719A1
|
|
Wave receiver
|
|
US3611166A
|
|
Accelerator for relativistic electrons
|
|
US3597042A
|
|
Apparatus for viewing pictures in apparent 3d effect
|
|
US3577144A
|
|
Distance measuring systems
|
|
US3536993A
|
|
Optical resonance cells
|
|
US3555406A
|
|
Optical resonance cells
|
|
DE1800772A1
|
|
Amplifier limiter stage
|
|
DE1797020A1
|
|
Tubular light guide
|
|
US3529834A
|
|
Pick-up arm for miniature record players
|
