Granted Patent
Utility
US 6,219,946 · App. 09/376,805
Power shovel with dipper door snubber and/or closure assembly
Inventor:
Carl A. Soczka
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Aug 18, 1999
Inventor
Carl A. Soczka
Assignee (at issue)
Harnischfeger Technologies, 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.