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Submarine Signal Co

Submarine
Active Patents
0
Total Holdings
59

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2470244A Electrical reproducing stylus Expired / Lapsed 1946-09-07 1949-05-17 0 Details
US2469594A Hoist-lower control Expired / Lapsed 1947-07-26 1949-05-10 0 Details
US2460274A Submarine signaling apparatus Expired / Lapsed 1942-12-09 1949-02-01 0 Details
US2452068A Sound pickup device Expired / Lapsed 1943-01-23 1948-10-26 0 Details
US2450413A Spark transmitter Expired / Lapsed 1946-02-07 1948-10-05 0 Details
US2450412A Device for transmitting and receiving compressional energy Expired / Lapsed 1942-11-20 1948-10-05 0 Details
US2428821A Method and apparatus for sound ranging Expired / Lapsed 1943-07-19 1947-10-14 0 Details
US2426501A Method and apparatus for radio ranging Expired / Lapsed 1941-10-16 1947-08-26 0 Details
US2420676A Submarine signaling apparatus Expired / Lapsed 1943-12-13 1947-05-20 0 Details
US2418490A Distance and direction measuring system Expired / Lapsed 1943-06-15 1947-04-08 0 Details
US2412234A Apparatus for echo distance measurement Expired / Lapsed 1940-11-22 1946-12-10 0 Details
US2408113A Apparatus for submarine signaling Expired / Lapsed 1941-08-26 1946-09-24 0 Details
US2407643A Apparatus for submarine signaling Expired / Lapsed 1940-08-03 1946-09-17 0 Details
US2407271A Apparatus for submarine signaling Expired / Lapsed 1939-07-22 1946-09-10 0 Details
US2407270A Submarine signaling Expired / Lapsed 1938-09-23 1946-09-10 0 Details
US2406856A Apparatus for controlling rotation Expired / Lapsed 1937-02-11 1946-09-03 0 Details
US2399695A Follow-up system Expired / Lapsed 1940-12-23 1946-05-07 0 Details
US2398815A Submarine signaling Expired / Lapsed 1941-04-01 1946-04-23 0 Details
US2380931A Compressional wave transmitting and receiving apparatus Expired / Lapsed 1933-05-19 1945-08-07 0 Details
US2342171A Apparatus for echo distance measurement Expired / Lapsed 1940-11-22 1944-02-22 0 Details
US2331934A Speed measuring and indicating Expired / Lapsed 1940-09-14 1943-10-19 0 Details
US2322264A Apparatus for echo distance measurement Expired / Lapsed 1941-07-25 1943-06-22 0 Details
US2284649A Electrical control apparatus Expired / Lapsed 1941-01-28 1942-06-02 0 Details
US2264333A Variable speed motor system Expired / Lapsed 1939-05-31 1941-12-02 0 Details
US2255162A Radio communication system Expired / Lapsed 1940-01-13 1941-09-09 0 Details
US2250509A Recording mechanism Expired / Lapsed 1937-10-02 1941-07-29 0 Details
US2170178A Vibratory apparatus Expired / Lapsed 1937-02-25 1939-08-22 0 Details
US2163632A Apparatus for controlling rotation Expired / Lapsed 1936-11-02 1939-06-27 0 Details
US2147674A Apparatus for controlling rotation Expired / Lapsed 1938-03-15 1939-02-21 0 Details
US2143035A Distance measuring apparatus Expired / Lapsed 1935-09-30 1939-01-10 0 Details
US2138036A Compressional wave sender or receiver Expired / Lapsed 1933-09-09 1938-11-29 0 Details
US2116523A System and method of distance and depth measurement Expired / Lapsed 1933-12-08 1938-05-10 0 Details
US2116522A Compressional wave sender and receiver Expired / Lapsed 1933-12-05 1938-05-10 0 Details
US2088588A System for geological explorations Expired / Lapsed 1935-07-18 1937-08-03 0 Details
US2088580A Electrical compensator Expired / Lapsed 1933-01-06 1937-08-03 0 Details
US2024234A Compensator Expired / Lapsed 1930-07-09 1935-12-17 0 Details
US2010968A Direction and distance measurement Expired / Lapsed 1933-08-03 1935-08-13 0 Details
US2009459A Distance and depth finding Expired / Lapsed 1929-07-29 1935-07-30 0 Details
US1993326A Means and method of measuring distance Expired / Lapsed 1930-05-19 1935-03-05 0 Details
US1983254A Method and apparatus for distance finding Expired / Lapsed 1930-05-19 1934-12-04 0 Details
US1982271A Method and means of measuring distance Expired / Lapsed 1930-05-19 1934-11-27 0 Details
US1924174A Means and method of measuring distance Expired / Lapsed 1930-05-19 1933-08-29 0 Details
US1924156A Means and method of measuring distance Expired / Lapsed 1930-05-19 1933-08-29 0 Details
US1677945A Method and apparatus for sound transmission Expired / Lapsed 1924-06-20 1928-07-24 0 Details
US1677943A Method and apparatus for measuring distance Expired / Lapsed 1924-01-17 1928-07-24 0 Details
US1667540A Method and apparatus for measuring distance Expired / Lapsed 1923-12-22 1928-04-24 0 Details
US1562950A Signaling by ultra-audible sound waves Expired / Lapsed 1918-12-14 1925-11-24 0 Details
US1547575A Method of sounding Expired / Lapsed 1924-03-01 1925-07-28 0 Details
US1547574A Apparatus for sounding Expired / Lapsed 1921-05-02 1925-07-28 0 Details
US1481946A Directional signal receiving Expired / Lapsed 1918-07-18 1924-01-29 0 Details
US1470733A Sound detection Expired / Lapsed 1919-06-25 1923-10-16 0 Details
US1401024A Diaphragm-mounting Expired / Lapsed 1917-11-12 1921-12-20 0 Details
US1396491A Device for estimating distances Expired / Lapsed 1919-06-24 1921-11-08 0 Details
US1384014A Method and apparatus for signaling and otherwise utilizing … Expired / Lapsed 1918-01-14 1921-07-05 0 Details
US1277562A Sound-producer. Expired / Lapsed 1917-02-28 1918-09-03 0 Details
US1240328A Method and apparatus for locating ore-bodies. Expired / Lapsed 1917-01-15 1917-09-18 0 Details
US1213611A Dynamo-electric machinery. Expired / Lapsed 1915-10-04 1917-01-23 0 Details
US1109811A Sounder. Expired / Lapsed 1910-11-16 1914-09-08 0 Details
US768573A Submarine sound-direction finder. Expired / Lapsed 1902-04-23 1904-08-23 0 Details