Granted Patent
Utility
US 4,951,808 · App. 07/461,008
Accumulating conveyor
Inventors:
Ellsworth H. Collins, James F. Mattingly, David B. Reed
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Jan 4, 1990
Inventors
Ellsworth H. Collins
James F. Mattingly
David B. Reed
Assignee (at issue)
The Interlake Companies, 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.