Douglas J. Herrick

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Poynette, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Detachable barrier for a doorway
- Patent number 5,271,449
- Issue date Dec 21, 1993
- Douglas J. Herrick
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS