Patent US2710557A successfully refreshed from Google Patents.
US2710557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Musical instrument strings
Assignee: SUNDT ENGINEERING Co
•
Filing: 1949-11-18
•
Granted: 1955-06-14
•
Expires: 1969-11-18
Abstract
No abstract record available.
Inventors
- 👤 Edward V Sundt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:04
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US202020A
Cited
US220907A
Cited
GB190816172A
Cited
US1277744A
Cited
US1187962A
Cited
GB264640A
Cited
GB272419A
Cited
CH134581A
Cited
US1772846A
Cited
US2005614A
Cited
US2048450A
Cited
US2049769A
Cited
US2049770A
Cited
US2112088A
Cited
US2252095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |