US2647208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit-arrangement
Assignee: Hartford National Bank and Trust Co
•
Filing: 1951-03-20
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Granted: 1953-07-28
•
Expires: 1971-03-20
Abstract
No abstract record available.
Inventors
- 👤 Jager Frank De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:22
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/04; H03K3/05; H03K3/06; H03C; H03C3/00; H04; H04B; H04B14/00; H04B14/02; H04B14/04; H04B14/042; H04L; H04L27/00; H04L27/10; H04L27/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2555999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |