US2698876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmitting device for frequencyshift telegraphy
Assignee: Hartford National Bank and Trust Co
•
Filing: 1953-05-07
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Granted: 1955-01-04
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Expires: 1973-05-07
Abstract
No abstract record available.
Inventors
- 👤 Bourgonjon Louis Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:35
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/10; H04L27/12; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/14
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) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |