|
US2480171A
(en)
*
|
1943-02-18 |
1949-08-30 |
Sperry Corp |
Pulse receiver system for improved target tracking
|
|
US2514443A
(en)
*
|
1943-06-07 |
1950-07-11 |
Rca Corp |
Selectivity control system
|
|
US2498561A
(en)
*
|
1945-09-06 |
1950-02-21 |
Harry J Lipkin |
Adjustable band-pass selector
|
|
US2509062A
(en)
*
|
1945-09-07 |
1950-05-23 |
Emi Ltd |
Selectable band width coupling network
|
|
US2624838A
(en)
*
|
1945-12-07 |
1953-01-06 |
Int Standard Electric Corp |
Radio receiver employing band pass coupling circuit arrangements
|
|
US2516056A
(en)
*
|
1946-02-26 |
1950-07-18 |
Rca Corp |
Method for tuning cascade tuned circuits
|
|
US2438045A
(en)
*
|
1946-11-01 |
1948-03-16 |
Thor Corp |
Control dial assembly
|
|
US2579345A
(en)
*
|
1947-07-05 |
1951-12-18 |
Rca Corp |
Amplifier band width control
|
|
US2597629A
(en)
*
|
1948-11-19 |
1952-05-20 |
Gen Electric |
Electron discharge amplifier
|
|
US2743356A
(en)
*
|
1949-06-25 |
1956-04-24 |
Rca Corp |
Tunable frequency systems of constant band width
|
|
US2750452A
(en)
*
|
1951-03-21 |
1956-06-12 |
Rca Corp |
Selectivity control circuit
|
|
DE1293353B
(de)
*
|
1953-02-13 |
1969-04-24 |
Drexler |
Kettenfilter aus wenigstens vier ueber Reaktanzen gekoppelten, in den Querzweigen angeordneten und gleich abgestimmten Parallelresonanzkreisen
|
|
US2908877A
(en)
*
|
1955-02-14 |
1959-10-13 |
Gen Electric |
Crystal filter
|
|
US2947859A
(en)
*
|
1955-08-11 |
1960-08-02 |
Motorola Inc |
Automatic control of coupling between input tuned circuits to vary attenuation and selectivity
|
|
US2997674A
(en)
*
|
1957-02-25 |
1961-08-22 |
Hoffman Electronics Corp |
Logarithmic signal limiting coupling circuit or the like
|
|
GB856892A
(en)
*
|
1957-11-14 |
1960-12-21 |
Collins Radio Co |
Means for reducing the threshold of angular-modulation receivers
|
|
DE1212988B
(de)
*
|
1959-03-11 |
1966-03-24 |
Loewe Opta Ag |
Mehrnormen-Fernsehempfaenger zum wahlweisen Empfang von Sendungen mit amplitudenmoduliertem oder mit frequenz-moduliertem Begleittonsignal
|
|
DE1616787B1
(de)
*
|
1962-12-21 |
1972-06-29 |
Siemens Ag |
Fm-richtfunksystem fuer einrichtungen der elektrischen nachrichtentechnik
|