Patent US2840657A successfully refreshed from Google Patents.
US2840657A
Expired / Lapsed
US
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Two circuit snap switch
Assignee: Illinois Tool Works Inc
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Filing: 1955-03-23
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Granted: 1958-06-24
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Expires: 1975-03-23
Abstract
No abstract record available.
Inventors
- 👤 John O Roeser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:35
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/26; H01H13/36; H01H13/365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1586713A
Cited
US1578485A
Cited
US1645528A
Cited
US1907869A
Cited
US1969304A
Cited
GB474919A
Cited
US2194533A
Cited
US2332911A
Cited
GB567471A
Cited
US2486033A
Cited
US2517845A
Cited
US2565790A
Cited
US2650973A
Cited
US2518255A
Cited
US2629791A
Cited
DE927579C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |