Granted Patent
Utility
US 4,552,811 · App. 06/619,967
Capsule manufacture
Inventors:
Robert W. Brown, Richard P. Bowman
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Jun 12, 1984
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.