Granted Patent
Utility
US 4,485,656 · App. 06/412,282
Transmission piston and method of making the same
Inventors:
Carl A. Nilson, Thomas Joseph Weir
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Aug 27, 1982
Inventors
Carl A. Nilson
Thomas Joseph Weir
Assignee (at issue)
Hayes-Albion 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.