Granted Patent
Utility
US 4,177,007 · App. 05/872,136
Centrifugal blower control apparatus
Inventors:
Andrew J. Schlangen, Jerry W. McClead, Thomas A. Garavalia
Patented Case
View Patent ↗
Granted: Dec 4, 1979
Filed: Jan 25, 1978
Inventors
Andrew J. Schlangen
Jerry W. McClead
Thomas A. Garavalia
Assignee (at issue)
The Trane 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.