Granted Patent
Utility
US 5,230,757 · App. 07/785,042
As-cast, age-hardened Cu-Sn-Ni worm gearing and method of making same
Inventors:
Karl B. Rundman, Mark D. Gugel, David A. Nichols
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Oct 30, 1991
Inventors
Karl B. Rundman
Mark D. Gugel
David A. Nichols
Assignee (at issue)
Cone Drive Operations, 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.