Patent US2562091A successfully refreshed from Google Patents.
US2562091A
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Relay
Assignee: AT&T Inc
•
Filing: 1946-08-28
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Granted: 1951-07-24
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Expires: 1966-08-28
Abstract
No abstract record available.
Inventors
- 👤 Henry C Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:58
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US991829A
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US1521591A
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US1647792A
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US1812545A
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US2076115A
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US2077622A
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US2442500A
Cited
US2377137A
Cited
US2427483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |