Granted Patent
Utility
US 4,967,596 · App. 07/397,517
Swing velocity indicator
Inventors:
John F. Rilling, R. Wendell Goodwin
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Aug 23, 1989
Inventors
John F. Rilling
R. Wendell Goodwin
Assignee (at issue)
GRT, 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.