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Noise controllable nozzle closure
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Patent number 4,036,013
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Issue date Jul 19, 1977
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The United States of America as represented by the Secretary of the Army
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Robert E. Betts
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Noise controllable nozzle closure
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Patent number 4,033,121
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Issue date Jul 5, 1977
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The United States of America as represented by the Secretary of the Army
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Robert E. Betts
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Noise controllable nozzle closure
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Patent number 4,023,356
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Issue date May 17, 1977
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The United States of America as represented by the Secretary of the Army
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Robert E. Betts
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Noise controllable nozzle closure
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Patent number 3,968,646
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Issue date Jul 13, 1976
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The United States of America as represented by the Secretary of the Army
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Robert E. Betts
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS