Donald F. Dengel

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Fond du Lac, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Wallet key holder
- Patent number 5,799,774
- Issue date Sep 1, 1998
- Donald F. Dengel
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Grant
Key retainer
- Patent number 4,901,549
- Issue date Feb 20, 1990
- Donald F. Dengel
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Grant
Key retainer
- Patent number 4,785,645
- Issue date Nov 22, 1988
- Donald F. Dengel
- A45 - HAND OR TRAVELLING ARTICLES