Granted Patent
Utility
US 4,501,079 · App. 06/526,001
Two piece cutting edge construction
Inventors:
Frederick C. Hahn, Larren F. Jones
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Aug 24, 1983
Inventors
Frederick C. Hahn
Larren F. Jones
Assignee (at issue)
ESCO GROUP LLC
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.