Engineered Instruments, Inc.

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Patents Grantslast 30 patents

Information Patent Grant
Rock-stress measuring method
- Patent number 5,018,389
- Issue date May 28, 1991
- Engineered Instruments, Inc.
- Dennis Mraz
- E21 - EARTH DRILLING MINING
Information Patent Grant
Anchor device for securing rock bolts
- Patent number 4,976,571
- Issue date Dec 11, 1990
- Engineered Instruments, Inc.
- Dennis Z. Mraz
- E21 - EARTH DRILLING MINING
Information Patent Grant
Anchor device for securing rock bolts
- Patent number 4,820,095
- Issue date Apr 11, 1989
- Engineered Instruments, Inc.
- Dennis Mraz
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks