Granted Patent
Utility
US 4,441,060 · App. 06/244,795
Vibratory conveyor control arrangement
Inventors:
Arthur Hamer, Beverley H. Pardoe
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Mar 17, 1981
Inventors
Arthur Hamer
Beverley H. Pardoe
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.