Patent US2651716A successfully refreshed from Google Patents.
US2651716A
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Pulse code modulation demodulator
Assignee: International Standard Electric Corp
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Filing: 1948-10-23
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Granted: 1953-09-08
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Expires: 1968-10-23
Abstract
No abstract record available.
Inventors
- 👤 Feissel Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:01
CPC Classifications
H; H03; H03M; H03M1/00; H04; H04B; H04B14/00; H04B14/02; H04B14/04; H03M1/12; H03M1/14
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |