Granted Patent
Utility
US 4,391,349 · App. 06/133,063
Turbomachine lubricating oil system
Inventors:
Alexander A. Carroll, William F. Hannan, III
Patented Case
View Patent ↗
Granted: Jul 5, 1983
Filed: Mar 24, 1980
Inventors
Alexander A. Carroll
William F. Hannan, III
Assignee (at issue)
CARRIER CORPORATION
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.