Granted Patent
Utility
US 4,250,420 · App. 06/084,974
Sandwich structure for a combination motor and gear train with a timing mechanism
Inventors:
Neil E. Grah, Robert F. Weaver
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Oct 15, 1979
Inventors
Neil E. Grah
Robert F. Weaver
Assignee (at issue)
Emhart Industries, 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.