|
US2433424A
(en)
*
|
1944-06-24 |
1947-12-30 |
Otis Elevator Co |
Electronic timing apparatus
|
|
US2428126A
(en)
*
|
1944-07-21 |
1947-09-30 |
Colonial Radio Corp |
Duplex control circuit
|
|
US2458283A
(en)
*
|
1944-10-23 |
1949-01-04 |
Automatic Elect Lab |
Impulse generator
|
|
US2576948A
(en)
*
|
1945-03-20 |
1951-12-04 |
Roy Raymond B Le |
Deflection circuit
|
|
NL70891C
(es)
*
|
1945-06-30 |
1900-01-01 |
|
|
|
US2968021A
(en)
*
|
1946-04-03 |
1961-01-10 |
Gaynor O Rockwell |
Depth charge attack recorder
|
|
FR973819A
(es)
*
|
1947-10-29 |
1951-02-15 |
|
|
|
US2586319A
(en)
*
|
1948-02-24 |
1952-02-19 |
Gen Electric |
Electric device continuity tester
|
|
US2542672A
(en)
*
|
1948-10-27 |
1951-02-20 |
Bell Telephone Labor Inc |
Coordinate selecting and lockout circuit
|
|
US2637810A
(en)
*
|
1948-11-12 |
1953-05-05 |
Potter Instrument Co Inc |
Electronic pulse generator
|
|
US2666848A
(en)
*
|
1948-12-02 |
1954-01-19 |
Erco Radio Lab Inc |
Selective audio gate circuit
|
|
US2636982A
(en)
*
|
1949-05-20 |
1953-04-28 |
|
fluexuu vtftvo |
|
US2686837A
(en)
*
|
1949-09-10 |
1954-08-17 |
Bell Telephone Labor Inc |
High-speed electronic switching system
|
|
US2578701A
(en)
*
|
1949-09-15 |
1951-12-18 |
Bell Telephone Labor Inc |
Coordinate selecting and lockout circuit
|
|
US2668195A
(en)
*
|
1949-12-29 |
1954-02-02 |
Bell Telephone Labor Inc |
Marking and switching system
|
|
US2691151A
(en)
*
|
1950-05-22 |
1954-10-05 |
Products & Licensing Corp |
Multiple switching systems
|
|
NL94369C
(es)
*
|
1952-01-16 |
|
|
|
|
US2731559A
(en)
*
|
1952-07-11 |
1956-01-17 |
Neil A Marshall |
Electronic measuring device
|
|
US3174079A
(en)
*
|
1961-09-14 |
1965-03-16 |
Eastman Kodak Co |
Photoelectric discriminator
|