Granted Patent
Utility
US 4,631,221 · App. 06/719,349
Sheet-like sandwich molding
Inventors:
Dieter Disselbeck, Dieter Stahl
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: Apr 3, 1985
Inventors
Dieter Disselbeck
Dieter Stahl
Assignee (at issue)
Hoechst GmbH
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.