DEFENSE RESEARCH TECHNOLOGIES, INC.

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LADY LAKE, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Acousto-fluidic driver for active control of turbofan engine noise
- Patent number 5,662,136
- Issue date Sep 2, 1997
- Defense Research Technologies, Inc.
- Tadeusz M. Drzewiecki
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Continuous oxygen content monitor
- Patent number 5,596,134
- Issue date Jan 21, 1997
- Defense Research Technologies, Inc.
- R. Michael Phillippi
- G01 - MEASURING TESTING
Information Patent Grant
Fluidic sound amplification system
- Patent number 5,540,248
- Issue date Jul 30, 1996
- Defense Research Technologies, Inc.
- Tadeusz M. Drzewiecki
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Vortex chamber mud pulser
- Patent number 5,455,804
- Issue date Oct 3, 1995
- Defense Research Technologies, Inc.
- Allen B. Holmes
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Fuel injection of coal slurry using vortex nozzles and valves
- Patent number 4,862,837
- Issue date Sep 5, 1989
- Defense Research Technologies, Inc.
- Allen B. Holmes
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

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