Granted Patent
Utility
US 5,318,426 · App. 08/037,909
Brick imprinting apparatus
Inventors:
David W. Hanson, Richard C. Nash, Lloyd Barthel, James Barthel, Michael A. Lynch
Patented Case
View Patent ↗
Granted: Jun 7, 1994
Filed: Mar 26, 1993
Inventors
David W. Hanson
Richard C. Nash
Lloyd Barthel
James Barthel
Michael A. Lynch
Assignee (at issue)
FABCON, 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.