Granted Patent
Utility
US 6,644,947 · App. 10/097,292
Wave tooth gears using identical non-circular conjugating pitch curves
Inventor:
Craig Cavanaugh
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Mar 14, 2002
Inventor
Craig Cavanaugh
Assignee (at issue)
Tuthill Corporation
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.