Granted Patent
Utility
US 5,387,389 · App. 08/172,856
Injection molding method and system with expandable cavity element
Inventors:
Paul Catalanotti, Sassan Tarahomi
Patented Case
View Patent ↗
Granted: Feb 7, 1995
Filed: Dec 23, 1993
Inventors
Paul Catalanotti
Sassan Tarahomi
Assignee (at issue)
Roehr Tool 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.