Granted Patent
Utility
US 4,953,868 · App. 07/441,044
Golf swing training device
Inventors:
Stanley C. Thompson, Elmer R. Fredericks
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Nov 24, 1989
Inventors
Stanley C. Thompson
Elmer R. Fredericks
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.