Granted Patent
Utility
US 3,995,388 · App. 05/638,558
Pop-up products and method of making
Inventors:
Ib Penick, John K. Volkert
Patented Case
View Patent ↗
Granted: Dec 7, 1976
Filed: Dec 8, 1975
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.