Granted Patent
Utility
US 4,312,918 · App. 06/187,131
Compositions of polyethylene and a copolymer of ethylene-alkyl acrylate and the use thereof as jacketing about telephone wires and cables
Inventor:
Robert Bostwick
Patented Case
View Patent ↗
Granted: Jan 26, 1982
Filed: Sep 15, 1980
Inventor
Robert Bostwick
Assignee (at issue)
Union Carbide Corporation
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.