Granted Patent
Utility
US 6,040,557 · App. 09/248,510
Drop-in air heater for an engine with heater support frame having prongs engaging heater holders
Inventors:
Andrew Prust, Jan P. Thimmesch
Patented Case
View Patent ↗
Granted: Mar 21, 2000
Filed: Feb 10, 1999
Inventors
Andrew Prust
Jan P. Thimmesch
Assignee (at issue)
Phillips & Temro 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.