Here are a few of the 50 or so patents issued to DonLeslie:
Year Number Inventor(s) Title/Description 1952 2,622,692 Leslie Apparatus for imposing vibrato on sound. 1952 2,622,693 Leslie Apparatus for imposing vibrato on sound. 1962 3,058,541 Leslie Rotary electrostatic speaker.
A more complete collection of Leslie's patents has been compiled by ?JohnFine as is available at http://hammond-leslie.com/DonLesliesPatents/.
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