Granted Patent
Utility
US 6,136,078 · App. 09/252,612
Marking composition and method for marking dark substrates
Inventor:
Michael S. Craig
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Feb 5, 1999
Inventor
Michael S. Craig
Assignee (at issue)
BINNEY & SMITH 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.