Granted Patent
Utility
US 5,222,840 · App. 07/719,282
Double plenum air conveyor/accumulator
Inventors:
Thomas M. Ingraham, Thomas Clark Pearson
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Jun 21, 1991
Inventors
Thomas M. Ingraham
Thomas Clark Pearson
Assignee (at issue)
The Stolle 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.