Granted Patent
Utility
US 4,353,199 · App. 06/254,319
Stone detector for harvesting machines
Inventors:
Mark K. Chow, Shaun A. Seymour, Cal L. Bryant
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: Apr 15, 1981
Inventors
Mark K. Chow
Shaun A. Seymour
Cal L. Bryant
Assignee (at issue)
Sperry Corp.
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.