Patent US2911494A successfully refreshed from Google Patents.
US2911494A
Expired / Lapsed
US
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Electromagnetically actuated switch construction
Assignee: McGraw Edison Co
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Filing: 1958-03-13
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Granted: 1959-11-03
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Expires: 1978-03-13
Abstract
No abstract record available.
Inventors
- 👤 Rigert Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:45
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1468701A
Cited
US1176984A
Cited
US1192531A
Cited
US1658511A
Cited
US1916360A
Cited
US2046401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |