Granted Patent
Utility
US 5,254,301 · App. 08/014,044
Process for preparing a sheet of polymer-based foam
Inventors:
Robert W. Sessions, Roy D. Carr, Peter E. Morin
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Feb 5, 1993
Inventors
Robert W. Sessions
Roy D. Carr
Peter E. Morin
Assignee (at issue)
Ferris Mfg. Corp.
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.