Granted Patent
Utility
US 4,581,187 · App. 06/470,638
Method of manufacturing a molded composite elastomeric foam sheet innersole
Inventors:
James B. Sullivan, Richard B. Box
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Feb 28, 1983
Inventors
James B. Sullivan
Richard B. Box
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.