US2731626A
(en)
*
|
|
1956-01-17 |
|
carolus |
DE908111C
(de)
*
|
1938-04-26 |
1954-04-01 |
Atlas Werke Ag |
Vorrichtung zur Entfernungsmessung nach der Echomethode
|
NL59193C
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1938-12-01 |
|
|
|
BE475046A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1939-04-12 |
|
|
|
FR961701A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1939-12-05 |
1950-05-19 |
|
|
US2437416A
(en)
*
|
1941-11-07 |
1948-03-09 |
Nat Simplex Bludworth Inc |
Deep and shoal alarm
|
US2435960A
(en)
*
|
1942-09-02 |
1948-02-17 |
Gen Electric |
Radio detecting and range finding system
|
US2628348A
(en)
*
|
1942-09-26 |
1953-02-10 |
Robert M Page |
Instrument for measuring the ratio of pulse width to pulse recurrence period of recurrent pulse signals
|
BE478020A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1942-11-23 |
|
|
|
US2474875A
(en)
*
|
1943-01-22 |
1949-07-05 |
Sperry Corp |
Pulse echo volume compensating system
|
US2466539A
(en)
*
|
1943-02-20 |
1949-04-05 |
Rca Corp |
Pulse-echo distance indicator
|
BE465284A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1943-06-04 |
|
|
|
US2807712A
(en)
*
|
1943-09-02 |
1957-09-24 |
Bell Telephone Labor Inc |
Electronic systems
|
US2435753A
(en)
*
|
1943-10-07 |
1948-02-10 |
Cutler Hammer Inc |
Apparatus for recording the duration of a transient effect
|
US2583531A
(en)
*
|
1944-06-29 |
1952-01-29 |
Hathaway Jarrett Lewis |
Reverberation control of gain
|
US2460316A
(en)
*
|
1944-07-31 |
1949-02-01 |
Horace M Trent |
Echo ranging and listening gear
|
US2446960A
(en)
*
|
1945-03-10 |
1948-08-10 |
Int Projector Corp |
Echo sounding indicator
|
US2539553A
(en)
*
|
1945-10-19 |
1951-01-30 |
Raytheon Mfg Co |
Recording system
|
US2562449A
(en)
*
|
1946-01-17 |
1951-07-31 |
Sperry Prod Inc |
Apparatus for inspecting materials by wave trains
|
US2969599A
(en)
*
|
1946-05-09 |
1961-01-31 |
Nye Robert Glen |
Group trainer for operators of echo-ranging equipment
|
US2502938A
(en)
*
|
1947-05-21 |
1950-04-04 |
Raytheon Mfg Co |
Sound ranging distance measuring system
|
US3053134A
(en)
*
|
1948-04-01 |
1962-09-11 |
Bell Telephone Labor Inc |
Optical pulse echo system
|
US3144632A
(en)
*
|
1948-12-17 |
1964-08-11 |
Raymond L Steinberger |
Sonar wake detector
|
US2738503A
(en)
*
|
1949-02-26 |
1956-03-13 |
Rca Corp |
Pulse echo altimeter with sensitivity time control
|
US2519898A
(en)
*
|
1949-07-27 |
1950-08-22 |
Gen Electric |
Depth measuring equipment
|
US2741756A
(en)
*
|
1953-07-16 |
1956-04-10 |
Rca Corp |
Electrical data storage device
|
BE536715A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
*
|
1954-03-24 |
|
|
|
DE1210995B
(de)
*
|
1955-12-30 |
1966-02-17 |
Atlas Werke Ag |
Einrichtung zur visuellen Darstellung eines Messwertes, insbesondere der durch Echolotung gemessenen Entfernung in Kurvenform
|
DE1043642B
(de)
*
|
1956-03-09 |
1958-11-13 |
Johannes Perthen Dr Ing |
Mit Messtaster arbeitendes Laengenfeinstmessgeraet
|
US3922631A
(en)
*
|
1960-06-20 |
1975-11-25 |
Us Navy |
Underwater intrusion detecting system
|
GB1298664A
(en)
*
|
1968-12-18 |
1972-12-06 |
Rilett John W |
Apparatus for monitoring distance
|