Granted Patent
Utility
US 4,355,509 · App. 06/108,871
Split torque transmission control
Inventors:
Thomas R. Fulkerson, Royal R. Hawkins
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Dec 31, 1979
Inventors
Thomas R. Fulkerson
Royal R. Hawkins
Assignee (at issue)
Sundstrand 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.