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US2527558A
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Two-way pulse multiplex communication system
Assignee: International Standard Electric Corp
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Filing: 1946-08-02
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Granted: 1950-10-31
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Expires: 1966-08-02
Abstract
No abstract record available.
Inventors
- 👤 Levy Maurice Moise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:29
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/44; H04B1/46; H04B1/54; H04B1/56; H04J; H04J3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2006812A
Cited
US2262838A
Cited
US2199634A
Cited
US2308381A
Cited
US2395467A
Cited
US2406165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |