CORNERSTONE FUELS, INC.

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MINNEAPOLIS, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Grounding system and detection circuit for fueling
- Patent number 5,159,523
- Issue date Oct 27, 1992
- Cornerstone Fuels, Inc.
- Daniel L. Claassen
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
74439414 - AVGAS
- Serial number 74439414
- Filing date Sep 23, 1993
- Cornerstone Fuels, Inc.
- 4 - Industrial oils and greases
Information Trademark
74439415 - CORNERSTONE
- Serial number 74439415
- Registration number 1854414
- Filing date Sep 23, 1993
- Cornerstone Fuels, Inc.
- 4 - Industrial oils and greases
Information Trademark
74169710 - JET-A
- Serial number 74169710
- Registration number 1696661
- Filing date May 24, 1991
- Cornerstone Fuels, Inc.
- 42 - Scientific and technological services and research and design relating thereto
Information Trademark
74108406 - CORNERSTONE
- Serial number 74108406
- Filing date Oct 23, 1990
- Cornerstone Fuels, Inc.
- 4 - Industrial oils and greases