|
US2819400A
|
|
F. m. tuning indicator
|
|
US2690509A
|
|
Omnidirectional loop antenna system
|
|
US2651761A
|
|
Variable band-width transformer
|
|
US2564740A
|
|
Radio-frequency transformer
|
|
US2638540A
|
|
Biased series-type noise limiter and silencer
|
|
US2493045A
|
|
Full-wave noise-peak and output limiter
|
|
US2536011A
|
|
Miniature acorn-tube socket with floating contacts
|
|
US2612050A
|
|
Shaft position control mechanism
|
|
US2567255A
|
|
High-frequency vacuum tube
|
|
US2472131A
|
|
Vacuum tube socket
|
|
US2505813A
|
|
Selective amplifier system
|
|
US2499429A
|
|
Radio receiver alignment system
|
|
US2587667A
|
|
Inductively coupled compensator
|
|
US2497103A
|
|
Noise reducing network
|
|
US2430894A
|
|
Hum elimination means
|
|
US2477670A
|
|
Cushioned stop for rotary members
|
|
US2395520A
|
|
Tuned inductor
|
|
US2303410A
|
|
Preset frequency rejection in intermediate frequency amplifiers
|
|
US2277731A
|
|
Means for silencing receivers during operation of transmitters
|
|
US2296882A
|
|
Crystal bridge circuit for radio amplifiers
|
