Granted Patent
Utility
US 4,590,714 · App. 06/667,785
Heat insulating tarpaulin
Inventor:
Stanley F. Walker
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Nov 2, 1984
Inventor
Stanley F. Walker
Assignee (at issue)
Manville Service Corporation
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.