Gibson bass guitar mute patent
The Gibson bass guitar mute was developed in 1960, by Gibson engineer Larry Allers, who had played a large part in the design of the Gibson EB2 to begin with. The patent was filed in April 1960, and granted in January 1962. In the meantime it had been announced for sale in mid 1960 (see the Gibson Gazette July/August 1960) at a price of $12.50.

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