Granted Patent
Utility
US 4,583,623 · App. 06/662,107
Heat shield element for a brake
Inventor:
Irving R. Ritsema
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Oct 18, 1984
Inventor
Irving R. Ritsema
Assignee (at issue)
ALLIED CONSULTING, 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.