Granted Patent
Utility
US 4,618,332 · App. 06/733,600
Derailleur for a bicycle
Inventor:
Masashi Nagano
Patented Case
View Patent ↗
Granted: Oct 21, 1986
Filed: May 13, 1985
Inventor
Masashi Nagano
Assignee (at issue)
Shimano Industrial, Co.
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.