Granted Patent
Utility
US 6,036,672 · App. 09/076,213
Instrument seal
Inventors:
Donna Allen, Austin R. Braganza, James E. Humphreys, Jr., John N. Johnston
Patented Case
View Patent ↗
Granted: Mar 14, 2000
Filed: May 12, 1998
Inventors
Donna Allen
Austin R. Braganza
James E. Humphreys, Jr.
John N. Johnston
Assignee (at issue)
Cabot Technology Corporation
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.