Patent US2562420A successfully refreshed from Google Patents.
US2562420A
Expired / Lapsed
US
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Interchangeable electric switch
Assignee: Siemens Energy and Automation Inc
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Filing: 1949-10-21
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Granted: 1951-07-31
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Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
- 👤 William C Furnas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:54
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/0006; H01H11/0012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2064632A
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US2190299A
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US2285956A
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US2335283A
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US2390344A
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US2419072A
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US2486033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |