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Patent applications and USPTO patent grants for Stich; Willi L..The latest application filed is for "advanced magnetic circuit to improve both the solenoidal and magnetic functions of string instrument pickups with co-linear coil assemblies".
Patent | Date |
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Advanced magnetic circuit to improve both the solenoidal and magnetic functions of string instrument pickups with co-linear coil assemblies Grant 7,227,076 - Stich June 5, 2 | 2007-06-05 |
Advanced magnetic circuit to improve both the solenoidal and magnetic functions of string instrument pickups with co-linear coil assemblies App 20060156911 - Stich; Willi L. | 2006-07-20 |
Multi-functional coil system for stringed instruments Grant 5,789,691 - Stich August 4, 1 | 1998-08-04 |
Pickup apparatus, having a winding with an adjacent closed circuit, for stringed musical instruments Grant 5,376,754 - Stich December 27, 1 | 1994-12-27 |
Musical instrument sound pickup and method of assembly thereof Grant 4,364,295 - Stich December 21, 1 | 1982-12-21 |
Natural Performance Extended Range Pick-up Device Grant 3,711,619 - Jones , et al. January 16, 1 | 1973-01-16 |
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