Granted Patent
Utility
US 4,808,205 · App. 07/121,424
Lid construction for a heating vessel and method of use
Inventors:
Gary N. Hughes, George A. Pecoraro
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Nov 16, 1987
Inventors
Gary N. Hughes
George A. Pecoraro
Assignee (at issue)
PPG Industries, 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.