Patent US2831086A successfully refreshed from Google Patents.
US2831086A
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Electric switch incorporating an automatic circuit breaker
Assignee: Mechanical Products Inc
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Filing: 1956-03-05
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Granted: 1958-04-15
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Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 Richard C Ingwersen
- 👤 Raymond L Hamill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:38
CPC Classifications
H; H01; H01H; H01H73/00; H01H73/22; H01H73/30; E; E02; E02B; E02B3/00; E02B3/20; E02B3/26; H01H71/00; H01H71/10; H01H71/1045; Y; Y02; Y02A; Y02A30/00; Y02A30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |