US2800034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical interlocks for plural electrical apparatus
Assignee: Cutler Hammer Inc
•
Filing: 1953-03-04
•
Granted: 1957-07-23
•
Expires: 1973-03-04
Abstract
No abstract record available.
Inventors
- 👤 Edwin W Seeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:07
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/24; H01H50/00; H01H50/16; H01H50/18; H01H50/32; H01H50/323; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20238; Y10T82/00; Y10T82/25; Y10T82/2502; Y10T82/2504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US606944A
Cited
GB167637A
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DE452424C
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US1836655A
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US2084877A
Cited
US2107350A
Cited
US2153277A
Cited
US2270900A
Cited
US2497416A
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US2583835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |