Granted Patent
Utility
US 5,947,021 · App. 08/963,735
Metal squeegee blade with a titanium nitride coating
Inventors:
William E. Coleman, Matthew Richter
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Nov 4, 1997
Inventors
William E. Coleman
Matthew Richter
Assignee (at issue)
PHOTO STENCIL, LLC
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.