David A. Sowers

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Coral Springs, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Pivot spring automatic door sealing apparatus
- Patent number 6,195,939
- Issue date Mar 6, 2001
- David A. Sowers
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Cam spring automatic door sealing apparatus
- Patent number 5,642,588
- Issue date Jul 1, 1997
- Perfect Seal L.C.
- David A. Sowers
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Method and device for cleaning a spray gun assembly
- Patent number 4,923,522
- Issue date May 8, 1990
- BSD Enterprises, Inc.
- David A. Sowers
- B08 - CLEANING
Information Patent Grant
Phosphorescent keyhole locator
- Patent number 4,914,554
- Issue date Apr 3, 1990
- BSD Enterprises, Inc.
- David A. Sowers
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Ratchet tool having open-ended jaws
- Patent number 4,770,070
- Issue date Sep 13, 1988
- David A. Sowers
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
Hypodermic needle and syringe sterilizing and destroying apparatus
- Publication number 20020092429
- Publication date Jul 18, 2002
- David A. Sowers
- B30 - PRESSES