US3218904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guitar training device
Assignee: Individual
•
Filing: 1963-10-09
•
Granted: 1965-11-23
•
Expires: 1983-10-09
Abstract
No abstract record available.
Inventors
- 👤 Leonard M Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:53
CPC Classifications
G; G10; G10D; G10D1/00; G10D1/04; G10D1/05; G10D1/08; G09; G09B; G09B15/00; G09B15/06; G10G; G10G1/00; G10G7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A TRAINING DEVICE OF THE CLASS DESCRIBED FOR STRING INSTRUMENTS, COMPRISING, IN COMBINATION, A RECTANGULAR, ELONGATED BODY HAVING A FLAT UPPER SURFACE AND AN ARCUATE REAR END, A PLURALITY OF PARALLEL LINES EMBOSSED LENGTHWISE UPON SAID FLAT SURFACE, AND A PLURALITY OF SLOTS PROVIDED UPON SAID FLAT SURFACE, SAID SLOT DISPOSED AT RIGHT ANGLES TO SAID PARALLEL LINES, A SLIDE IN SAID DEVICE, CHORD INSIGNIA IMPRINTED UPON SAID SLIDE REPRESENTING THE VARIOUS CHORDS, AND NUMBER INSIGNIA IMPRINTED UPON SAID SLIDE REPRESENTING THE POSITION OF FINGERS IN PLAYING SAID STRING INSTRUMENT, A POINTER IMPRINTED UPON SAID DEVICE, SAID POINTER POINTING TO A SPECIFIC CHORD IMPRINTED UPON SAID SLIDE, THE RESPECTIVE NUMERALS OF FINGER POSITIONS IMPRINTED UPON SAID SLIDE BEING READILY VISIBLE THROUGH THE SLOTS DISPOSED UPON SAID FLAT SURFACE IN SAID TRAINING DEVICE.
Claim 2
Dependent Claim
132 words
A TRAINING DEVICE OF THE CLASS DESCRIBED FOR STRING INSTRUMENTS, COMPRISING, IN COMBINATION, A RECTANGULAR, ELONGATED BODY HAVING A FLAT UPPER SURFACE AND AN ARCUATE REAR END, A PLURALITY OF PARALLEL LINES EMBOSSED LENGTHWISE UPON SAID FLAT SURFACE, AND A PLURALITY OF SLOTS PROVIDED UPON SAID FLAT SURFACE, SAID SLOT DISPOSED AT RIGHT ANGLES TO SAID PARALLEL LINES, A SLIDE IN SAID DEVICE, CHORD INSIGNIA IMPRINTED UPON SAID SLIDE REPRESENTING THE VARIOUS CHORDS, AND NUMBER INSIGNIA IMPRINTED UPON SAID SLIDE REPRESENTING THE POSITION OF FINGERS IN PLAYING SAID STRING INSTRUMENT, A POINTER IMPRINTED UPON SAID DEVICE, SAID POINTER POINTING TO A SPECIFIC CHORD IMPRINTED UPON SAID SLIDE, THE RESPECTIVE NUMERALS OF FINGER POSITIONS IMPRINTED UPON SAID SLIDE BEING READILY VISIBLE THROUGH THE SLOTS DISPOSED UPON SAID FLAT SURFACE IN SAID TRAINING DEVICE.
References Cited (Backward Citations)
GB190009641A
Cited
US830915A
Cited
US826379A
Cited
US1556147A
Cited
US1751048A
Cited
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Cited
US2225613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |