Granted Patent
Utility
US 4,579,614 · App. 06/690,557
Label shrink oven
Inventors:
Robert J. Burmeister, Frank J. DiFrank, Russell W. Heckman
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Jan 11, 1985
Inventors
Robert J. Burmeister
Frank J. DiFrank
Russell W. Heckman
Assignee (at issue)
Owens-Illinois Inc.
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.