Granted Patent
Utility
US 4,490,313 · App. 06/460,704
Capsule manufacture
Inventors:
Robert W. Brown, Richard P. Bowman
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Jan 24, 1983
Inventors
Robert W. Brown
Richard P. Bowman
Assignee (at issue)
Appleton Papers Inc.
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.