Granted Patent
Utility
US 4,701,334 · App. 06/800,470
Method of selectively operating a cooking apparatus with circulating heated air or water vapor
Inventor:
Wilfried Durth
Patented Case
View Patent ↗
Granted: Oct 20, 1987
Filed: Nov 21, 1985
Inventor
Wilfried Durth
Assignee (at issue)
Buderus Aktiengesellschaft
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.