Granted Patent
Utility
US 6,066,262 · App. 09/209,719
Concrete mix water
Inventors:
Daniel P. Montgomery, Freda M. Bauer
Patented Case
View Patent ↗
Granted: May 23, 2000
Filed: Dec 11, 1998
Inventors
Daniel P. Montgomery
Freda M. Bauer
Assignee (at issue)
FRITZ INDUSTRIES, INC.
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.