Granted Patent
Utility
US 4,787,271 · App. 07/029,197
Gear box
Inventor:
J. William Brogdon
Patented Case
View Patent ↗
Granted: Nov 29, 1988
Filed: Mar 23, 1987
Inventor
J. William Brogdon
Assignee (at issue)
Teledyne 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.