Granted Patent
Utility
US 4,440,205 · App. 06/355,869
Wedge and axe head
Inventor:
George Hillinger
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Mar 8, 1982
Inventor
George Hillinger
Assignee (at issue)
Alltrade Inc.
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.