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US2489302A
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Multichannel time modulated electrical pulse communication system
Assignee: International Standard Electric Corp
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Filing: 1945-07-02
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Granted: 1949-11-29
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Expires: 1965-07-02
Abstract
No abstract record available.
Inventors
- 👤 Levy Maurice Moise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:47
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/042; H03; H03K; H03K17/00; H03K17/51; H03K17/54; H03K7/00; H03K9/00; H03K9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2262838A
Cited
US2227596A
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US2403210A
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US2391776A
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US2413023A
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US2408077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |