Patent US3548066A successfully refreshed from Google Patents.
US3548066A
Expired / Lapsed
US
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Plural mode automatic bass note system for musical chords with automatic rhythm device
Assignee: Individual
•
Filing: 1968-07-29
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Granted: 1970-12-15
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Expires: 1988-07-29
Abstract
No abstract record available.
Inventors
- 👤 Alfred B Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:54
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/36; G10H1/38; G10H1/383; G10H2210/00; G10H2210/571; G10H2210/616; G10H2210/626; Y; Y10; Y10S; Y10S84/00; Y10S84/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |