Darrell A. Frohrib

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St. Paul, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Intelligent insert with integral sensor
- Patent number 4,927,300
- Issue date May 22, 1990
- Regents of The University of Minnesota
- Subbiah Ramalingam
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Integral acoustic emission sensor for manufacturing processes and m...
- Patent number 4,927,299
- Issue date May 22, 1990
- Regents of The University of Minnesota
- Subbiah Ramalingam
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR