Signaling Device Patent - 1917 issued to Charlie Louthan . 5 printed pages of patent on heavy stock paper used in the United States Patent and Trademark Office Examining Room for reference prior to conversion to microfilm. This was tossed years ago when the USPTO decided it no longer needed the paper for the examiners. This original historic document naturally shows signs of use. Cut unevenly on borders. Some tape repair.
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Patent Image