1
Willi L Stich: Musical instrument sound pickup and method of assembly thereof. Nathaniel A Humphries, December 21, 1982: US04364295 (28 worldwide citation)

A sound pickup for a stringed musical instrument has a hollow open-topped housing with a base plate matingly fitting in the housing; the housing is formed of ABS plastic coated with copper nickel-chrome layers. The base plate is formed of ABS with its outer surface being nickel plated; two parallel ...


2
Willi L Stich: Pickup apparatus, having a winding with an adjacent closed circuit, for stringed musical instruments. Gibson Guitar, Dougherty Hessin Beavers & Gilbert, December 27, 1994: US05376754 (17 worldwide citation)

A pickup apparatus for a stringed musical instrument includes an electromagnetic string vibration sensor, preferably including at least one winding, and a feature associated therewith, preferably a conductive closed circuit around the winding, to suppress resonant peaks and thereby equalize the harm ...


3
Willi L Stich: Advanced magnetic circuit to improve both the solenoidal and magnetic functions of string instrument pickups with co-linear coil assemblies. Fender Musical Instruments Corporation, Robert D Atkins, Quarles & Brady, June 5, 2007: US07227076 (12 worldwide citation)

An electromagnetic pickup for a stringed musical instrument incorporating a magnetic structure placed between two elongated collinear coils of opposing polarity. The magnetic structure includes a number of ferromagnetic polepieces that extend through the collinear coils and two ferromagnetic moderat ...


4
Willi L Stich: Multi-functional coil system for stringed instruments. Sanford J Piltch, August 4, 1998: US05789691 (9 worldwide citation)

A multi-function coil for use in a magnetic pickup apparatus for transducing the mechanical motion of the stings of an instrument wound on a single coilform structured to separate the single continuous coil into first and second collinear segments in each of two winding spaces, each coil having a pr ...


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Willi L Stich: Advanced magnetic circuit to improve both the solenoidal and magnetic functions of string instrument pickups with co-linear coil assemblies. Quarles & Brady, July 20, 2006: US20060156911-A1

An electromagnetic pickup for a stringed musical instrument incorporating a magnetic structure placed between two elongated collinear coils of opposing polarity. The magnetic structure includes a number of ferromagnetic polepieces that extend through the collinear coils and two ferromagnetic moderat ...



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