| 1929 FRANK Tuning Stringed Instruments Art |
| 1929 MILLS NOVELTY CO Harmonic Stringed Instruments |
| 1929 OVERTON Stringed Musical Instrument Patent |
| 1929 HAGBERG Attachment Stringed Musical Instruments |
| 1929 NICOLA Stringed Musical Instrument Patent |
| 1929 JEROME Stringed Musical Instrument Patent |
| 1929 LUCK Stringed Musical Instrument Patent |
| 1929 ERNST Playing Chords On Stringed Instruments |
| 1929 COX Finger Board Stringed Musical Instruments |
| 1929 GEORGE Stringed Musical Instrument Art |
| 1929 NOVOTNY Stringed Musical Instrument Patent |
| 1929 WENDELL Bridge Stringed Musical Instruments |
| 1929 STODDARD Striking Stringed Musical Instruments |
| 1929 STEWART Stringed Musical Instrument Patent |
| 1929 JOHN Stringed Musical Instrument Patent |
| 1929 GROVER Tuning Peg Stringed Musical Instruments |
| 1929 GILLESPIE Stringed Musical Instrument Art |
| 1929 REGAL Tuning Stringed Instruments Art |
| 1929 MILLS Harmonic Stringed Instruments Art |
| 1929 INTERNAT MUSICAL CORP Stringed Musical Instrument |
| 1929 WALTER Stringed Musical Instrument Patent |
| 1929 LIVINGSTON Collapsible Stringed Instrument |