Granted Patent
Utility
US 5,587,408 · App. 08/307,285
Solid erasable marking composition
Inventors:
Barbara Burns, Ralph J. Shuman
Patented Case
View Patent ↗
Granted: Dec 24, 1996
Filed: Sep 16, 1994
Inventors
Barbara Burns
Ralph J. Shuman
Assignee (at issue)
Avery Dennison 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.