Granted Patent
Utility
US 4,258,472 · App. 06/078,910
Shear
Inventors:
Edward M. Wallace, Robert G. Gosselin, Ernest D. Labarre
Patented Case
View Patent ↗
Granted: Mar 31, 1981
Filed: Sep 26, 1979
Inventors
Edward M. Wallace
Robert G. Gosselin
Ernest D. Labarre
Assignee (at issue)
Wallace Mfg. Co.
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.