Granted Patent
Utility
US 3,951,206 · App. 05/494,165
Rotary disc type heat exchanger
Inventors:
Norman E. Williams, David Lynn Phillips, Richard A. Ley, Bruce Beaubien, Richard L. Brown
Patented Case
View Patent ↗
Granted: Apr 20, 1976
Filed: Aug 2, 1974
Inventors
Norman E. Williams
David Lynn Phillips
Richard A. Ley
Bruce Beaubien
Richard L. Brown
Assignee (at issue)
The Strong-Scott Mfg. Co.
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.