Granted Patent
Utility
US 4,072,549 · App. 05/681,855
Method and apparatus for fabricating thermoplastic containers
Inventors:
Stephen W. Amberg, Ralph G. Amberg
Patented Case
View Patent ↗
Granted: Feb 7, 1978
Filed: Apr 30, 1976
Inventors
Stephen W. Amberg
Ralph G. Amberg
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.