Christy F. Tvrdik

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Ingleside, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Retractable doorway gate device
- Patent number 6,435,250
- Issue date Aug 20, 2002
- Marc D. Pichik
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS