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Ira B. Rushwald
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Seattle, WA, US
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Patents Grants
last 30 patents
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Patent Grant
Jet engine noise suppressor
Patent number
4,979,587
Issue date
Dec 25, 1990
The Boeing Company
William J. Hirt
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Patent Grant
High efficiency broadband acoustic resonator and absorption panel
Patent number
4,421,201
Issue date
Dec 20, 1983
The Boeing Company
Murray D. Nelsen
G10 - MUSICAL INSTRUMENTS ACOUSTICS