Granted Patent
Utility
US 5,197,375 · App. 07/753,426
Conveyor oven control
Inventors:
Richard Rosenbrock, Ralph A. Chrzastek, William S. Schjerven, SR.
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Aug 30, 1991
Inventors
Richard Rosenbrock
Ralph A. Chrzastek
William S. Schjerven, SR.
Assignee (at issue)
THE MIDDLEBY 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.