Granted Patent
Utility
US 4,514,812 · App. 06/424,686
Method and apparatus for controlling the thickness of a lamina of a coextruded laminate
Inventors:
Peter Miller, Maclin S. Hall
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Sep 27, 1982
Inventors
Peter Miller
Maclin S. Hall
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.