Granted Patent
Utility
US 4,666,381 · App. 06/839,316
Lubricant distribution system for scroll machine
Inventor:
Arthur L. Butterworth
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Mar 13, 1986
Inventor
Arthur L. Butterworth
Assignee (at issue)
American Standard 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.