US2579358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical musical instrument
Assignee: Individual
•
Filing: 1947-08-07
•
Granted: 1951-12-18
•
Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 Bourn Leslie Edwin Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:46
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/03; G10H3/10; Y; Y10; Y10S; Y10S84/00; Y10S84/04; Y10S84/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19702E
Cited
USRE21554E
Cited
US2237105A
Cited
GB501520A
Cited
US2126464A
Cited
US2276390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |