Granted Patent
Utility
US 5,146,775 · App. 07/806,722
Chain liner
Inventors:
James G. Ballard, Craig A. Wisner
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Dec 12, 1991
Inventors
James G. Ballard
Craig A. Wisner
Assignee (at issue)
Hein-Werner 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.