Granted Patent
Utility
US 4,529,361 · App. 06/600,149
Vane pump having spokes with channel-shaped vanes
Inventor:
Jack G. Sundberg
Patented Case
View Patent ↗
Granted: Jul 16, 1985
Filed: Apr 13, 1984
Inventor
Jack G. Sundberg
Assignee (at issue)
Chandler Evans Inc.
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.