Granted Patent
Utility
US 4,415,317 · App. 06/232,526
Wrap element and tip seal for use in fluid apparatus of the scroll type
Inventor:
Arthur L. Butterworth
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Feb 9, 1981
Inventor
Arthur L. Butterworth
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.