Sean M. Frost

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Chisago City, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Spring toe forming device and method
- Patent number 5,454,249
- Issue date Oct 3, 1995
- Reell Precision Manufacturing Corporation
- Mark A. Kempf
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...