Ralph K. Wyssling

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Glenview, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for the manufacture of a thin sheet orifice plate
- Patent number 3,978,705
- Issue date Sep 7, 1976
- Cotton Incorporated
- Larry N. Pearce
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...