Granted Patent
Utility
US 4,732,247 · App. 07/005,719
Triple cone synchronizer with servo action
Inventor:
Barry L. Frost
Patented Case
View Patent ↗
Granted: Mar 22, 1988
Filed: Jan 21, 1987
Inventor
Barry L. Frost
Assignee (at issue)
Chrysler Motors 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.