Granted Patent
Utility
US 4,938,475 · App. 07/089,329
Bicycle racing training apparatus
Inventors:
Bruce A. Sargeant, Mark J. Hoffenberg, Rob Reasons, Robert A. Walpert
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Aug 25, 1987
Inventors
Bruce A. Sargeant
Mark J. Hoffenberg
Rob Reasons
Robert A. Walpert
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.