Granted Patent
Utility
US 4,599,802 · App. 06/752,811
Draftsman's dimensional divider
Inventor:
Walter Keller
Patented Case
View Patent ↗
Granted: Jul 15, 1986
Filed: Jul 8, 1985
Inventor
Walter Keller
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.