Granted Patent
Utility
US 5,018,871 · App. 07/382,613
Polymer dilution and activation apparatus
Inventors:
Carl L. Brazelton, Troy C. Litherland
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Jul 19, 1989
Inventors
Carl L. Brazelton
Troy C. Litherland
Assignee (at issue)
Stranco, 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.