Granted Patent
Utility
US 4,398,959 · App. 06/352,292
Mortar topping with calcium nitrite
Inventors:
Arnold M. Rosenberg, James M. Gaidis, Howard J. Troffkin
Patented Case
View Patent ↗
Granted: Aug 16, 1983
Filed: Feb 25, 1982
Inventors
Arnold M. Rosenberg
James M. Gaidis
Howard J. Troffkin
Assignee (at issue)
W. R. Grace & Co.
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.