Granted Patent
Utility
US 4,537,027 · App. 06/554,127
Hybrid exhaust manifold
Inventors:
Jon W. Harwood, Michael Clegg, Mark C. Treadwell
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Nov 21, 1983
Inventors
Jon W. Harwood
Michael Clegg
Mark C. Treadwell
Assignee (at issue)
APX Group, 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.