Granted Patent
Utility
US 5,224,836 · App. 07/881,948
Control system for prime driver of compressor and method
Inventors:
John T. Gunn, Daniel T. Martin, William H. Harden
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: May 12, 1992
Inventors
John T. Gunn
Daniel T. Martin
William H. Harden
Assignee (at issue)
Ingersoll-Rand Company
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.