Granted Patent
Utility
US 4,667,781 · App. 06/796,361
Electric brake heater
Inventors:
Ronald C. Lilley, Edgar J. Ruof
Patented Case
View Patent ↗
Granted: May 26, 1987
Filed: Nov 8, 1985
Inventors
Ronald C. Lilley
Edgar J. Ruof
Assignee (at issue)
Goodyear Aerospace Corporation
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.