Granted Patent
Utility
US 4,552,275 · App. 06/553,264
Pressurized fluid package
Inventors:
Long F. Chang, Frank Patek
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Nov 18, 1983
Inventors
Long F. Chang
Frank Patek
Assignee (at issue)
Owens-Illinois 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.