Granted Patent
Utility
US 4,428,357 · App. 06/310,552
Self-ventilated range and method of installing
Inventor:
Thomas R. Field
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Oct 13, 1981
Inventor
Thomas R. Field
Assignee (at issue)
Jenn-Air 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.