Granted Patent
Utility
US 5,368,692 · App. 08/099,219
Method for controlling pitch
Inventor:
Arthur P. Derrick
Patented Case
View Patent ↗
Granted: Nov 29, 1994
Filed: Jul 29, 1993
Inventor
Arthur P. Derrick
Assignee (at issue)
Vinings 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.