Willi Preu

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Dubuque, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Panel holding structure
- Patent number 3,982,371
- Issue date Sep 28, 1976
- Scovill Manufacturing Company
- Willi Preu
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS