Granted Patent
Utility
US 4,832,604 · App. 07/083,632
Writing aid
Inventor:
Chris E. Rusk
Patented Case
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Granted: May 23, 1989
Filed: Aug 10, 1987
Inventor
Chris E. Rusk
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.