This Day in Patent History

US 1,678,456 “Resonance Ring for Stringed Musical Instruments,” patented by George Altermatt, of Kalamazoo, MI and assigned to Gibson, Inc., 1928.
(Clicking the link above takes you to the Google Patents site for this patent — A good example of mis-spellings introduced by Google’s poor quality control in scanning the patent documents from the US Patent Office.)

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