Early Patents Section

In this historical section we will be adding some early patents that were filed by some of our industries forefathers nearly half a century ago.

D. E. Griswold 3217653
J. R. Skidgel 3149784
C. V. Zieg 3309028
E. J. Hunter 3304478
E. J. Hunter 3272436
E. J. Hunter 3306114