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US2854540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch
Assignee: Individual
•
Filing: 1957-08-15
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Granted: 1958-09-30
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Expires: 1977-08-15
Abstract
No abstract record available.
Inventors
- 👤 Lewis L Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:32
CPC Classifications
H; H01; H01H; H01H5/00; H01H5/04; H01H5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2190299A
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US2197230A
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US2444529A
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US2545264A
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US2616996A
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US2584460A
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US2595967A
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US2669618A
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US2657288A
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US2700079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |