Granted Patent
Utility
US 4,539,072 · App. 06/575,655
Curl neutralizer
Inventors:
Kenneth G. Frye, Arthur T. Karis
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: Jan 31, 1984
Inventors
Kenneth G. Frye
Arthur T. Karis
Assignee (at issue)
Beloit 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.