Granted Patent
Utility
US 4,614,519 · App. 06/669,567
Soil release agent for textiles
Inventors:
Ronald M. Ruppert, Lenore E. Savio
Patented Case
View Patent ↗
Granted: Sep 30, 1986
Filed: Nov 8, 1984
Inventors
Ronald M. Ruppert
Lenore E. Savio
Assignee (at issue)
GAF 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.