Granted Patent
Utility
US 5,590,482 · App. 08/495,340
Excavator and earthen material excavator bucket apparatus
Inventors:
Randy S. Peterson, Thomas Steele, Robert D. Walker
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: Jun 27, 1995
Inventors
Randy S. Peterson
Thomas Steele
Robert D. Walker
Assignee (at issue)
R. A. Hanson Company, 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.