Granted Patent
Utility
US 4,172,178 · App. 05/903,376
Impregnated castings chemically resistant to contact with halocarbon refrigerant
Inventors:
Gordon C. Gainer, Russell M. Luck
Patented Case
View Patent ↗
Granted: Oct 23, 1979
Filed: May 5, 1978
Inventors
Gordon C. Gainer
Russell M. Luck
Assignee (at issue)
Westinghouse Electric Company LLC
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.