Granted Patent
Utility
US 4,489,557 · App. 06/123,543
Turbocharger for internal combustion engines
Inventors:
Sherwood L. Fawcett, James N. Anno
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Feb 22, 1980
Inventors
Sherwood L. Fawcett
James N. Anno
Assignee (at issue)
Battelle Development 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.