Granted Patent
Utility
US 5,567,337 · App. 08/249,635
Electric engine block heater with flanged screw
Inventors:
Gary C. Ewards, William Rose, Ronald H. Schaefer
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: May 26, 1994
Inventors
Gary C. Ewards
William Rose
Ronald H. Schaefer
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.