Granted Patent
Utility
US 4,664,030 · App. 06/782,084
Simultaneous multisurface diffusion printer
Inventors:
Ronald A Siverson, Jay Clark
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Sep 30, 1985
Inventors
Ronald A Siverson
Jay Clark
Assignee (at issue)
ADVANCED INPUT DEVICES, 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.