Foam Concepts, Inc.

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Duluth, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Mine shaft and adit closure apparatus and method
- Patent number 5,803,172
- Issue date Sep 8, 1998
- Foam Concepts, Inc.
- Richard A. Rajkovich
- F42 - AMMUNITION BLASTING
Information Patent Grant
Expansion foam borehole plug and method
- Patent number 5,497,829
- Issue date Mar 12, 1996
- Foam Concepts, Inc.
- Richard A. Rajkovich
- F42 - AMMUNITION BLASTING

Patents Applicationslast 30 patents

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