Granted Patent
Utility
US 4,272,707 · App. 05/968,557
Motor control techniques
Inventors:
Robert C. Burgener, Philip T. Martin
Patented Case
View Patent ↗
Granted: Jun 9, 1981
Filed: Dec 11, 1978
Inventors
Robert C. Burgener
Philip T. Martin
Assignee (at issue)
The Interlake Companies, 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.