Granted Patent
Utility
US 4,479,878 · App. 06/437,382
High calcium tolerant deposit control method
Inventor:
Larry W. Becker
Patented Case
View Patent ↗
Granted: Oct 30, 1984
Filed: Oct 28, 1982
Inventor
Larry W. Becker
Assignee (at issue)
Betz Laboratories, 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.