Granted Patent
Utility
US 4,246,335 · App. 06/028,485
Shape dispensing of photopolymer
Inventors:
Kevin E. Keogh, John J. Zimmer
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Apr 9, 1979
Inventors
Kevin E. Keogh
John J. Zimmer
Assignee (at issue)
W. R. Grace & Co.
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.