Sidewinder: A type of hum cancelling pickup Invented by Seth Lover circa 1955 and used in Fralin's noiseless P-90 and Lace's Holy Grail (Strat and P-90).  Unfortunately this design is dysfunctional, it has a fatal technical flaw and cancels string signal almost as much as hum signal in the same way as common Stacks do.  This can be easily proved by reversing the connections of one coil which improves sound and volume dramatically but this re-arrangement does not cancel hum.  People who make these things simply do not understand basic Electrical Engineering principles, so just what are they doing making pickups? PS Bill Lawrence claimed to have invented the Sidewinder during his mid 60’s tenure at Gibson.  But US Patent 2896491 by Seth Lover dated 1955 discloses the truth