|
DE908111C
(de)
*
|
1938-04-26 |
1954-04-01 |
Atlas Werke Ag |
Vorrichtung zur Entfernungsmessung nach der Echomethode
|
|
US2420672A
(en)
*
|
1939-01-05 |
1947-05-20 |
Maillet Raymond |
Geophysical prospecting
|
|
BE475046A
(nl)
*
|
1939-04-12 |
|
|
|
|
DE885571C
(de)
*
|
1942-03-14 |
1953-08-06 |
Atlas Werke Ag |
Vorrichtung zur Entfernungsmessung nach der Echomethode, insbesondere mittels elektromagnetischer Wellen
|
|
US2435960A
(en)
*
|
1942-09-02 |
1948-02-17 |
Gen Electric |
Radio detecting and range finding system
|
|
US2429623A
(en)
*
|
1942-09-14 |
1947-10-28 |
Standard Telephones Cables Ltd |
Pulse distance measuring system
|
|
BE478020A
(nl)
*
|
1942-11-23 |
|
|
|
|
US2428351A
(en)
*
|
1943-01-22 |
1947-10-07 |
Sperry Gyroscope Co Inc |
Radio wave reflectivity indicating system
|
|
US2474875A
(en)
*
|
1943-01-22 |
1949-07-05 |
Sperry Corp |
Pulse echo volume compensating system
|
|
BE465284A
(nl)
*
|
1943-06-04 |
|
|
|
|
US2807712A
(en)
*
|
1943-09-02 |
1957-09-24 |
Bell Telephone Labor Inc |
Electronic systems
|
|
US2427523A
(en)
*
|
1943-11-06 |
1947-09-16 |
Philco Corp |
Blanking circuit
|
|
US2444721A
(en)
*
|
1944-03-21 |
1948-07-06 |
Hazeltine Research Inc |
Wave-signal translating system
|
|
US2566858A
(en)
*
|
1944-06-29 |
1951-09-04 |
Paul B Sebring |
Reverberation control of gain
|
|
US2583531A
(en)
*
|
1944-06-29 |
1952-01-29 |
Hathaway Jarrett Lewis |
Reverberation control of gain
|
|
US2865015A
(en)
*
|
1944-07-14 |
1958-12-16 |
Jr Arthur Nelson Butz |
Apparatus and method for echo ranging
|
|
US2666192A
(en)
*
|
1944-07-27 |
1954-01-12 |
Frederick V Hunt |
Apparatus for determining the direction of underwater targets
|
|
US2543068A
(en)
*
|
1945-07-14 |
1951-02-27 |
Seddon John Carl |
Radio impulse receiver
|
|
US2662978A
(en)
*
|
1945-11-29 |
1953-12-15 |
Philco Corp |
Logarithmic transducer
|
|
US3066633A
(en)
*
|
1945-12-27 |
1962-12-04 |
Bell Telephone Labor Inc |
Signal translating systems
|
|
US3041993A
(en)
*
|
1945-12-27 |
1962-07-03 |
Bell Telephone Labor Inc |
Signal translating system
|
|
US2573762A
(en)
*
|
1946-03-27 |
1951-11-06 |
Philco Corp |
Radar receiver sensitivity control system
|
|
US2969599A
(en)
*
|
1946-05-09 |
1961-01-31 |
Nye Robert Glen |
Group trainer for operators of echo-ranging equipment
|
|
US2705794A
(en)
*
|
1946-06-11 |
1955-04-05 |
Philco Corp |
Signal modifying apparatus for eliminating variations as a function of one or more independent variables
|
|
US2583173A
(en)
*
|
1946-07-29 |
1952-01-22 |
Gilfillan Bros Inc |
Radar receiver
|
|
US2602922A
(en)
*
|
1946-08-23 |
1952-07-08 |
Gen Electric |
Sensitivity time control
|
|
FR959969A
(nl)
*
|
1946-12-11 |
1950-04-07 |
|
|
|
US2502938A
(en)
*
|
1947-05-21 |
1950-04-04 |
Raytheon Mfg Co |
Sound ranging distance measuring system
|
|
US2594916A
(en)
*
|
1947-11-26 |
1952-04-29 |
Rca Corp |
Automatic gain control circuits
|
|
US3053134A
(en)
*
|
1948-04-01 |
1962-09-11 |
Bell Telephone Labor Inc |
Optical pulse echo system
|
|
US2599586A
(en)
*
|
1948-08-03 |
1952-06-10 |
Honeywell Regulator Co |
Marine depth finder
|
|
US2624875A
(en)
*
|
1948-10-26 |
1953-01-06 |
Gen Electric |
Pulse echo system with time sensitivity control
|
|
US2606316A
(en)
*
|
1948-11-05 |
1952-08-05 |
Raytheon Mfg Co |
Electronic amplifier circuits
|
|
US2738503A
(en)
*
|
1949-02-26 |
1956-03-13 |
Rca Corp |
Pulse echo altimeter with sensitivity time control
|
|
NL153959B
(nl)
*
|
1950-05-29 |
|
Basf Ag |
Werkwijze ter bereiding van appreteermiddelen.
|
|
US3022486A
(en)
*
|
1950-09-15 |
1962-02-20 |
Gettys Charles Briggs |
Automatic proportional preset of amplifier gain
|
|
US3102261A
(en)
*
|
1958-01-27 |
1963-08-27 |
Bendix Corp |
Sonic altimeter
|
|
US4197591A
(en)
*
|
1958-08-04 |
1980-04-08 |
Julius Hagemann |
Facsimile recording of sonic values of the ocean bottom
|
|
US4523472A
(en)
*
|
1980-07-02 |
1985-06-18 |
Purecycle Corporation |
Ultrasonic transceiver circuit
|
|
US4400976A
(en)
*
|
1980-07-02 |
1983-08-30 |
Purecycle Corporation |
Ultrasonic transceiver circuit for level sensing
|