Granted Patent
Utility
US 4,351,284 · App. 06/108,006
Internal combustion engine with water heated intake manifold
Inventor:
George C. Ludwig
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Dec 28, 1979
Inventor
George C. Ludwig
Assignee (at issue)
Tom McGuane Industries, 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.