Granted Patent
Utility
US 4,752,625 · App. 06/754,305
Thermoplastic foam molding
Inventors:
Wen P. Wu, Charles M. Krutchen
Patented Case
View Patent ↗
Granted: Jun 21, 1988
Filed: Jul 12, 1985
Inventors
Wen P. Wu
Charles M. Krutchen
Assignee (at issue)
Mobil Oil 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.