Granted Patent
Utility
US 4,015,908 · App. 05/668,136
Multiple-piece crankshaft
Inventor:
Allan Ashley
Patented Case
View Patent ↗
Granted: Apr 5, 1977
Filed: Mar 18, 1976
Inventor
Allan Ashley
Assignee (at issue)
AMSTED INDUSTRIES INCORPORATED
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.