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Sonar target simulator
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Patent number 11,074,828
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Issue date Jul 27, 2021
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The Boeing Company
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Matthew J. Ragozzino
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A63 - SPORTS GAMES AMUSEMENTS
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Modular video display system
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Patent number 6,190,172
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Issue date Feb 20, 2001
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McDonnell Douglas Corporation
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Robert J. Lechner
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G06 - COMPUTING CALCULATING COUNTING
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Modular video display system
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Patent number 5,927,985
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Issue date Jul 27, 1999
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McDonnell Douglas Corporation
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Robert J. Lechner
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G06 - COMPUTING CALCULATING COUNTING
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Modular video display system
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Patent number 5,746,599
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Issue date May 5, 1998
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McDonnell Douglas Corporation
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Robert J. Lechner
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G06 - COMPUTING CALCULATING COUNTING
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Acoustic target doppler simulator
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Patent number 4,986,755
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Issue date Jan 22, 1991
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The United States of America as represented by the Secretary of the Navy
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James K. Johnson
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Depth finder with tutorial
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Patent number 4,943,951
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Issue date Jul 24, 1990
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Microsonics, Inc.
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David R. Leavell
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Low-cost sound related trainer
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Patent number 4,932,880
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Issue date Jun 12, 1990
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The United States of America as represented by the Secretary of the Navy
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David M. Kotick
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Acoustic regenerator
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Patent number 4,759,067
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Issue date Jul 19, 1988
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The United States of America as represented by the Secretary of the Navy
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Robert E. Page
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Sonobuoy simulator device
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Patent number 4,250,634
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Issue date Feb 17, 1981
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Her Majesty the Queen in right of Canada, as represented by the Minister of N...
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Lawrence A. Buckler
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Sonar target simulator
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Patent number 4,219,885
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Issue date Aug 26, 1980
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The United States of America as represented by the Secretary of the Navy
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Claude C. Routh
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Sonar reverberation simulation
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Patent number 3,936,958
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Issue date Feb 10, 1976
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The United States of America as represented by the Secretary of the Navy
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Arthur B. Clapsaddle
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3916533
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Patent number 3,916,533
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Issue date Nov 4, 1975
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3894348
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Patent number 3,894,348
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Issue date Jul 15, 1975
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3845395
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Patent number 3,845,395
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Issue date Oct 29, 1974
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G06 - COMPUTING CALCULATING COUNTING
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3835234
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Patent number 3,835,234
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Issue date Sep 10, 1974
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3829596
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Patent number 3,829,596
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Issue date Aug 13, 1974
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3803336
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Patent number 3,803,336
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Issue date Apr 9, 1974
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3789128
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Patent number 3,789,128
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Issue date Jan 29, 1974
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3764720
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Patent number 3,764,720
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Issue date Oct 9, 1973
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3713081
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Patent number 3,713,081
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Issue date Jan 23, 1973
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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3700780
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Patent number 3,700,780
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Issue date Oct 24, 1972
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G06 - COMPUTING CALCULATING COUNTING
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3671657
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Patent number 3,671,657
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Issue date Jun 20, 1972
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS