Granted Patent
Utility
US 6,659,310 · App. 09/524,811
Product dispensing and drainback fitting
Inventor:
Christopher J. Wolpert
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Mar 14, 2000
Inventor
Christopher J. Wolpert
Assignee (at issue)
The Dial Corporation
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.