Granted Patent
Utility
US 5,172,831 · App. 07/812,015
Valve actuator for a soft drink dispenser station
Inventor:
Bruce D. Burrows
Patented Case
View Patent ↗
Granted: Dec 22, 1992
Filed: Dec 23, 1991
Inventor
Bruce D. Burrows
Assignee (at issue)
Ebtech 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.