Granted Patent
Utility
US 4,281,683 · App. 06/155,412
Modular multiple-fluid component selection and delivery system
Inventors:
Robert D. Hetherington, David W. Goelz
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: Jun 2, 1980
Inventors
Robert D. Hetherington
David W. Goelz
Assignee (at issue)
Poly-Glas Systems, 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.