On June 20, 2017, I filed a new Provisional Patent Application with the U.S. Patent & Trademark Office. It covers modifications to two types of electro-magnetic guitar pickups, with horizontal and vertical coils, to provide information on the orientation of the magnet poles to a pickup switching system. This information is needed for humbucking pairs, quads, etc., to correctly determine if pickups must be connected either in-phase or contra-phase.
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