Granted Patent
Utility
US 4,713,978 · App. 06/828,851
Automotive transmissions of the rolling traction type
Inventor:
Forbes G. Perry
Patented Case
View Patent ↗
Granted: Dec 22, 1987
Filed: Jan 23, 1986
Inventor
Forbes G. Perry
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.