J. A. Hermanson

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Sumner, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Circular and oval flanged rings for connecting ducting and method o...
- Patent number 6,289,706
- Issue date Sep 18, 2001
- J. A. Hermanson
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...