Jeffrey E. Landtroop

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Vicksburg, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Musical instrument string with hyper elliptical wound cover wire
- Patent number 8,283,539
- Issue date Oct 9, 2012
- Jeffrey E. Landtroop
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Musical instrument string with auto wound cover wire
- Patent number 6,465,721
- Issue date Oct 15, 2002
- Jeffrey E. Landtroop
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Gauge for selecting musical instrument strings
- Patent number 6,265,651
- Issue date Jul 24, 2001
- American Winding Company
- Jeffrey Landtroop
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Guitar string manufacturing auto start winding process
- Patent number 6,256,872
- Issue date Jul 10, 2001
- Jeffrey E. Landtroop
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Musical Instrument String with Hyper Elliptical Wound Cover Wire
- Publication number 20110005365
- Publication date Jan 13, 2011
- Jeffrey E. Landtroop
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Guitar string manufacturing auto start winding process
- Publication number 20010039722
- Publication date Nov 15, 2001
- Jeffrey E. Landtroop
- G10 - MUSICAL INSTRUMENTS ACOUSTICS