Richard W. Schumacher

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Newington, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Adjustable closer arm
- Patent number 4,944,066
- Issue date Jul 31, 1990
- Emhart Industries, Inc.
- Zakhary Fayngersh
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES