Granted Patent
Utility
US 4,396,352 · App. 06/284,319
Pitch adjustment for blades of ceiling fan
Inventor:
Richard A. Pearce
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Jul 17, 1981
Inventor
Richard A. Pearce
Assignee (at issue)
TRW Limited
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.