US2828389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bimetallic switches
Assignee: Ellenberger and Poensgen GmbH
•
Filing: 1954-07-13
•
Granted: 1958-03-25
•
Expires: 1974-07-13
Abstract
No abstract record available.
Inventors
- 👤 Ellenberger Jakob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:24
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/08; H02H7/085; G; G21; G21K; G21K1/00; G21K1/02; G21K1/025; H01; H01H; H01H61/00; H01H61/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2320252A
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US2417912A
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US2576815A
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US2535969A
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US2630553A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |