Granted Patent
Utility
US 4,349,973 · App. 06/133,493
Pop-ups and methods of making
Inventors:
Ib Penick, John K. Volkert
Patented Case
View Patent ↗
Granted: Sep 21, 1982
Filed: Mar 21, 1980
Inventors
Ib Penick
John K. Volkert
Assignee (at issue)
Compak Systems Limited
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.