Granted Patent
Utility
US 4,513,682 · App. 06/361,518
Positive drive rotator
Inventor:
Tadeusz S. Otocki
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Mar 24, 1982
Inventor
Tadeusz S. Otocki
Assignee (at issue)
Protectaire Systems, Co.
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.