Granted Patent
Utility
US 4,600,621 · App. 06/687,063
Thermoformable polymeric foam headliners
Inventors:
Richard P. Maurer, James S. Holtrop
Patented Case
View Patent ↗
Granted: Jul 15, 1986
Filed: Dec 28, 1984
Inventors
Richard P. Maurer
James S. Holtrop
Assignee (at issue)
Monsanto Company
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.