Granted Patent
Utility
US 4,310,367 · App. 06/137,079
Method of sealing an item in a covering comprising a composition of a polyethylene and isobutylene copolymer
Inventor:
Anthony J. Berejka
Patented Case
View Patent ↗
Granted: Jan 12, 1982
Filed: Apr 3, 1980
Inventor
Anthony J. Berejka
Assignee (at issue)
Radiation Dynamics, 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.