Granted Patent
Utility
US 4,351,671 · App. 06/254,235
Water reducing agent with reduced air
Inventors:
Arnold M. Rosenberg, James M. Gaidis, Lawrence J. Kindt
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Apr 15, 1981
Inventors
Arnold M. Rosenberg
James M. Gaidis
Lawrence J. Kindt
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.