Granted Patent
Utility
US 4,401,784 · App. 06/340,686
Thermoplastic moulding composition and use thereof
Inventor:
Franz Breitenfellner
Patented Case
View Patent ↗
Granted: Aug 30, 1983
Filed: Jan 20, 1982
Inventor
Franz Breitenfellner
Assignee (at issue)
Ciba-Geigy
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.