Granted Patent
Utility
US 5,176,396 · App. 07/680,121
Fifth wheel unlocking device with fluid powered redundancy
Inventors:
V. Terrey Hawthorne, John W. Kaim
Patented Case
View Patent ↗
Granted: Jan 5, 1993
Filed: Apr 3, 1991
Inventors
V. Terrey Hawthorne
John W. Kaim
Assignee (at issue)
AMSTED INDUSTRIES INCORPORATED
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.