Granted Patent
Utility
US 4,661,333 · App. 06/505,800
Aluminosilicates
Inventors:
Colin Atkinson, Roger Brace, Nathan Burak
Patented Case
View Patent ↗
Granted: Apr 28, 1987
Filed: Jun 20, 1983
Inventors
Colin Atkinson
Roger Brace
Nathan Burak
Assignee (at issue)
Internationale Otrool Maatschappij Octropa B.V.
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.