Granted Patent
Utility
US 5,331,023 · App. 07/855,919
Pressure-sensitive crayon adhesive
Inventors:
Peter S. Columbus, Yogeshbhai B. Patel
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Mar 23, 1992
Inventors
Peter S. Columbus
Yogeshbhai B. Patel
Assignee (at issue)
Borden 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.