US2524677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal generator
Assignee: Decca Record Co Ltd
•
Filing: 1945-08-27
•
Granted: 1950-10-03
•
Expires: 1965-08-27
Abstract
No abstract record available.
Inventors
- 👤 William J O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:52
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/06; H03B19/08; H03B19/10; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/543
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2181309A
Cited
US2237661A
Cited
US2266668A
Cited
US2188611A
Cited
US2255403A
Cited
US2408061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |