US2794092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitive relay
Assignee: FIVE STAR Co Inc
•
Filing: 1953-11-12
•
Granted: 1957-05-28
•
Expires: 1973-11-12
Abstract
No abstract record available.
Inventors
- 👤 Bertil S Bengtsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:48
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/36; H01H50/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US544236A
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US1085810A
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US1534753A
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FR579729A
Cited
US1992610A
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US2140139A
Cited
US2454060A
Cited
US2580123A
Cited
US2524874A
Cited
US2664478A
Cited
US2666826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |