Richard H. Hoops

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Stoughton, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Rigid foraminous microphone probe for acoustic measurement in turbu...
- Patent number 4,903,249
- Issue date Feb 20, 1990
- Nelson Industries
- Richard H. Hoops
- G01 - MEASURING TESTING
Information Patent Grant
Active acoustic attenuation system for higher order mode non-unifor...
- Patent number 4,815,139
- Issue date Mar 21, 1989
- Nelson Industries, Inc.
- Larry J. Eriksson
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Microphone probe for acoustic measurement in turbulent flow
- Patent number 4,811,309
- Issue date Mar 7, 1989
- Nelson Industries Inc.
- Larry J. Eriksson
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Hybrid active silencer
- Patent number 4,665,549
- Issue date May 12, 1987
- Nelson Industries Inc.
- Larry J. Eriksson
- G10 - MUSICAL INSTRUMENTS ACOUSTICS