Granted Patent
Utility
US 5,155,334 · App. 07/668,194
Mirror heater
Inventors:
John A. Marstiller, Frederick G. J. Grise
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Mar 12, 1991
Inventors
John A. Marstiller
Frederick G. J. Grise
Assignee (at issue)
Flexwatt 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.