Granted Patent
Utility
US 4,596,539 · App. 06/731,275
Bicycle drive chain
Inventor:
Kazuto Yamasaki
Patented Case
View Patent ↗
Granted: Jun 24, 1986
Filed: May 7, 1985
Inventor
Kazuto Yamasaki
Assignee (at issue)
Maeda Industries, Ltd
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.