Granted Patent
Utility
US 5,018,645 · App. 07/472,236
Automotive fluids dispensing and blending system
Inventor:
Herbert G. Zinsmeyer
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Jan 30, 1990
Inventor
Herbert G. Zinsmeyer
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.