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US2464667A
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US
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Method of transmitting telegraphic signals
Assignee: Hartford National Bank and Trust Co
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Filing: 1946-07-15
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Granted: 1949-03-15
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Expires: 1966-07-15
Abstract
No abstract record available.
Inventors
- 👤 Boosman Herman Bernardl Rudolf
- 👤 Posthumus Klaas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:23
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02; H03; H03K; H03K11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2118156A
Cited
US2061734A
Cited
US2266401A
Cited
GB540233A
Cited
US2406019A
Cited
US2412974A
Cited
US2408794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |