US2662113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse-code modulation communication system
Assignee: Hartford National Bank and Trust Co
•
Filing: 1949-02-10
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Granted: 1953-12-08
•
Expires: 1969-02-10
Abstract
No abstract record available.
Inventors
- 👤 Schouten Jan Frederik
- 👤 Jager Frank De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:39
CPC Classifications
H; H03; H03M; H03M1/00; H04; H04B; H04B14/00; H04B14/02; H04B14/06; H04B14/066; H03M1/06; H03M1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2013671A
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US2114255A
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US2207744A
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US2139655A
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US2438908A
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US2464607A
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US2514671A
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US2516587A
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US2510054A
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US2520125A
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US2505029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |