Patent US2515769A successfully refreshed from Google Patents.
US2515769A
Expired / Lapsed
US
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Bar relay
Assignee: Automatic Electric Laboratories Inc
•
Filing: 1946-07-13
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Granted: 1950-07-18
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Expires: 1966-07-13
Abstract
No abstract record available.
Inventors
- 👤 Graybill Kenneth Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:09
CPC Classifications
H; H01; H01H; H01H67/00; H01H67/22; H01H67/26; H01H50/00; H01H50/54; H01H50/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1954758A
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US2069171A
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US2135832A
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US2238365A
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US2137503A
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US2339610A
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US2323961A
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US2374017A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |