Granted Patent
Utility
US 3,953,945 · App. 05/590,956
Grinding machine with energy absorbing breakage guard
Inventor:
Richard A. Dahlin
Patented Case
View Patent ↗
Granted: May 4, 1976
Filed: Jun 27, 1975
Inventor
Richard A. Dahlin
Assignee (at issue)
Warner & Swasey
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.