Erich F Papenfus from Golden, CO, age 61

String Instrument Frets And Associated Fret Optical Apparatus
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US Patent:

8269083, Sep 18, 2012
Filed:

Mar 31, 2010
Appl. No.:

12/751857
Inventors:

Erich Papenfus - Golden CO, US
International Classification:

G10D 3/06
US Classification:

84314R
Abstract:

An instrument comprising a body, a neck and a plurality of strings. The neck comprises a first end having a headstock, a fretboard, at least one mineral fret coupled to the fretboard, and a second end one of coupled and integrated to the body. The mineral fret may be generally transparent.

String Instrument Frets And Associated Fret Optical Apparatus
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US Patent:

20090272248, Nov 5, 2009
Filed:

May 5, 2008
Appl. No.:

12/114854
Inventors:

Erich Papenfus - Golden CO, US
International Classification:

G10D 3/06
A63J 17/00
US Classification:

84314 R, 84464 A
Abstract:

An instrument comprising a body, a neck and a plurality of strings. The neck comprises a first end having a headstock, a fretboard, at least one mineral fret coupled to the fretboard, and a second end one of coupled and integrated to the body. The mineral fret may be generally transparent.

Erich F Papenfus