US2755457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuning indicator
Assignee: Hartford National Bank and Trust Co
•
Filing: 1954-12-22
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Granted: 1956-07-17
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Expires: 1974-12-22
Abstract
No abstract record available.
Inventors
- 👤 Diemer Gesinus
- 👤 Joormann Hendrik Jacobus Maria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:53
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/02; H03J1/04; G; G01; G01R; G01R13/00; G01R13/40; G01R13/401; G01R13/402; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/14; H05; H05B; H05B33/00; H05B33/12; H05B33/26; Y; Y10; Y10S; Y10S116/00; Y10S116/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |