Granted Patent
Utility
US 5,545,871 · App. 08/180,684
Method of making a modified elliptical gear
Inventor:
Charles F. Carr
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Jan 11, 1994
Inventor
Charles F. Carr
Assignee (at issue)
Micropump, 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.