US2557133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupler system in electric musical instruments
Assignee: BALDWIN Co
•
Filing: 1948-11-18
•
Granted: 1951-06-19
•
Expires: 1968-11-18
Abstract
No abstract record available.
Inventors
- 👤 Raymond P Mork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:47
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/18; Y; Y10; Y10S; Y10S84/00; Y10S84/25
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2233948A
Cited
US2403664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |