Granted Patent
Utility
US 5,899,079 · App. 08/835,759
Damper apparatus for refrigerated vending machines with a defrost cycle
Inventors:
David C. Dunnigan, Bart W. Baxter, Joseph A. Lotspeich
Patented Case
View Patent ↗
Granted: May 4, 1999
Filed: Apr 10, 1997
Inventors
David C. Dunnigan
Bart W. Baxter
Joseph A. Lotspeich
Assignee (at issue)
Gross-Given Manufacturing Company
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.