Granted Patent
Utility
US 4,476,183 · App. 06/553,594
Thermoformable laminate structure with improved acoustical absorption
Inventors:
James S. Holtrop, Richard P. Maurer
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Nov 21, 1983
Inventors
James S. Holtrop
Richard P. Maurer
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.