Granted Patent
Utility
US 4,938,733 · App. 07/456,155
Bicycle gear shifting method and apparatus
Inventor:
Sam Patterson
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Dec 21, 1989
Inventor
Sam Patterson
Assignee (at issue)
SRAM, LLC
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.