US2406309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency stabilization
Assignee: Hartford National Bank and Trust Co
•
Filing: 1942-11-03
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Granted: 1946-08-20
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Expires: 1962-11-03
Abstract
No abstract record available.
Inventors
- 👤 Ziegler Marc
- 👤 Kobilsky Manuel Julio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:37
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/02; H03J7/04; H03J7/042; H03C; H03C3/00; H03C3/02; H03C3/09; H03D; H03D3/00; H03D3/001; H03D3/003; H03D3/004; H03D3/02; H03D3/04; H03L; H03L7/00; H03L7/02
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) | 1949-08-19 | 1950-02-18 | 1950-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-08-19 | 1954-02-18 | 1954-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-08-19 | 1958-02-18 | 1958-08-20 | $7700.00 | Window Closed / Lapsed |