Granted Patent
Utility
US 6,553,779 · App. 10/031,643
Valve and door assembly for semi-frozen food dispensing machine
Inventors:
George C. Boyer, Michael Meserole, Ronald J. Mrugala
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Nov 2, 2001
Inventors
George C. Boyer
Michael Meserole
Ronald J. Mrugala
Assignee (at issue)
Specialty Equipment Companies, 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.