Granted Patent
Utility
US 5,129,804 · App. 07/458,598
Mold having an insert for molding bathtubs
Inventors:
John C. Perantoni, Ronald M. Marsilio
Patented Case
View Patent ↗
Granted: Jul 14, 1992
Filed: Dec 29, 1989
Inventors
John C. Perantoni
Ronald M. Marsilio
Assignee (at issue)
American Standard 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.