This is the nickname given to the original Gibson Humbucking pickup designed by Seth E. Lover. The patent was filed on June 22, 1955 and granted on July 28, 1959. The actual pickup patent number for the pickup is 2,896,491. On the patent application it’s called a “MAGNETIC PICKUP FOR STRINGED MUSICAL INSTRUMENT”. Some of the principal objects of the invention are:

First, to provide a magnetic pickup for a stringed musical instrument which is not affected by adjacent electrical devices and which does not pick up and transmit to the amplifier the hum of such devices.

Second, to provide an electromagnetic pickup for stringed musical instrument with magnetically opposed pickup coils that neutralize the effect of currents induced by adjacent electrical devices.

Third, to provide a hum neutralizing magnetic pickup that is efficient in producing electrical vibrations in response to the playing of a stringed instrument.

Fourth, to provide a magnetic pickup that effectively employs relatively small masses of permanent magnet material and is easily mounted on a stringed musical instrument in proper relation to the strings of the instrument.

Fifth, to provide a magnetic pickup having a metallic magnetic return circuit between a pole of the permanent magnet and a coacting string of a musical instrument to increase the strength of the magnetic field around the string and improve the efficiency of the permanent magnet.