Granted Patent
Utility
US 4,597,733 · App. 06/701,753
Gas heating system for dehydrators and the like
Inventors:
Alvin Dean, Rodney T. Heath
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Feb 14, 1985
Inventors
Alvin Dean
Rodney T. Heath
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.