Granted Patent
Utility
US 4,578,438 · App. 06/710,641
Preparation of resinous products
Inventors:
Christopher G. Demmer, Roderick D. Hathaway
Patented Case
View Patent ↗
Granted: Mar 25, 1986
Filed: Mar 11, 1985
Inventors
Christopher G. Demmer
Roderick D. Hathaway
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.