Granted Patent
Utility
US 4,517,756 · App. 06/629,651
Snubber for dipper door
Inventors:
John R. Olds, Mark R. Alt
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: Jul 11, 1984
Inventors
John R. Olds
Mark R. Alt
Assignee (at issue)
Abex 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.