Granted Patent
Utility
US 4,255,885 · App. 06/116,349
Apparatus for controlling the position of the pivoting floor and strikeoff blade of an earthmoving scraper
Inventors:
Roger R. Mitchell, Robert J. Trayler, Eugene M. Wilson
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Nov 1, 1979
Inventors
Roger R. Mitchell
Robert J. Trayler
Eugene M. Wilson
Assignee (at issue)
Caterpillar Tractor Co.
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.