Granted Patent
Utility
US 5,193,951 · App. 07/702,275
Wood-drilling bit
Inventor:
Thomas O. Schimke
Patented Case
View Patent ↗
Granted: Mar 16, 1993
Filed: May 17, 1991
Inventor
Thomas O. Schimke
Assignee (at issue)
Vermont American Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.