US2660618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal translation system
Assignee: International Standard Electric Corp
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Filing: 1948-01-20
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Granted: 1953-11-24
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Expires: 1968-01-20
Abstract
No abstract record available.
Inventors
- 👤 Pierre R Aigrain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:53
CPC Classifications
H; H03; H03M; H03M1/00; H03M5/00; H03M1/12; H03M1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |