US2491265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical relay with contact multiplying movement
Assignee: Signal Engineering & Manufacturing Co
•
Filing: 1946-02-07
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Granted: 1949-12-13
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Expires: 1966-02-07
Abstract
No abstract record available.
Inventors
- 👤 Jr John M High
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:33
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US273728A
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US329808A
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US384323A
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US626606A
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US754689A
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US1302284A
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US1748917A
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US1954365A
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US2092560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |