Granted Patent
Utility
US 4,369,643 · App. 06/211,319
Closure with smooth edge
Inventors:
Cosmo J. Cianciolo, John R. Snyder, Roderick V. King
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Nov 28, 1980
Inventors
Cosmo J. Cianciolo
John R. Snyder
Roderick V. King
Assignee (at issue)
Ethyl Products Company
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.