US2725476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase stabilising device
Assignee: Hartford National Bank and Trust Co
•
Filing: 1951-05-09
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Granted: 1955-11-29
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Expires: 1971-05-09
Abstract
No abstract record available.
Inventors
- 👤 Hugenholtz Eduard Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:35
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/16; H03L7/20; F; F01; F01L; F01L7/00; F01L7/08; H03J; H03J7/00; H03J7/02; H03J7/04; H03J7/042; H03J7/18; H03J7/20; H03J7/22; H03L7/08; H03L7/10; H03L7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2406309A
Cited
US2457140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |