Granted Patent
Utility
US 4,257,883 · App. 06/011,323
Parts sorting mechanism
Inventor:
Steven Frazier
Patented Case
View Patent ↗
Granted: Mar 24, 1981
Filed: Feb 12, 1979
Inventor
Steven Frazier
Assignee (at issue)
Realex 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.