IP Library Granted Patent US 4,474,503
Granted Patent Utility
US 4,474,503 · App. 06/360,584

Traffic control apparatus

Inventors: William L. Booth, Leslie S. Stone
Patented Case View Patent ↗
Granted: Oct 2, 1984 Filed: Mar 22, 1982
Inventors
William L. Booth
Leslie S. Stone

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.

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Quick Facts
Patent No.
US 4,474,503
App. No.
06/360,584
Filed
1982-03-22
Granted
1984-10-02
Kind
A