Granted Patent
Utility
US 5,234,497 · App. 07/543,353
Cementitious formulations and processes
Inventor:
David A. Crocker
Patented Case
View Patent ↗
Granted: Aug 10, 1993
Filed: Jun 25, 1990
Inventor
David A. Crocker
Assignee (at issue)
Texas 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.