Granted Patent
Utility
US 5,163,586 · App. 07/702,170
Automotive fuel additive dispensing and blending system
Inventor:
Herbert G. Zinsmeyer
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: May 20, 1991
Inventor
Herbert G. Zinsmeyer
Assignee (at issue)
Additive 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.