R. David Lewis

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Auburn, GA, US

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Patents Grantslast 30 patents

Information Patent Grant
Face mask for self contained breathing apparatus
- Patent number 6,062,222
- Issue date May 16, 2000
- International Safety Instruments, Inc.
- R. David Lewis
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Combination backframe and self contained breathing apparatus
- Patent number 6,050,261
- Issue date Apr 18, 2000
- International Safety Instruments, Inc.
- R. David Lewis
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Pressure display for self contained breathing apparatus
- Patent number 6,032,664
- Issue date Mar 7, 2000
- International Safety Instruments, Inc.
- Robert E. Gray
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Light weight scuba with buoyancy control
- Patent number 5,660,503
- Issue date Aug 26, 1997
- R. David Lewis
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Dual activation alarm system
- Patent number 5,640,148
- Issue date Jun 17, 1997
- International Safety Instruments, Inc.
- R. David Lewis
- G08 - SIGNALLING
Information Patent Grant
Air tank filling system
- Patent number 5,529,096
- Issue date Jun 25, 1996
- International Safety Instruments, Inc.
- David F. Rowe
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT