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Patent US2943172A successfully refreshed from Google Patents.
US2943172A
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Electric switch incorporating an automatic circuit breaker
Assignee: Mechanical Products Inc
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Filing: 1958-06-09
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Granted: 1960-06-28
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Expires: 1978-06-09
Abstract
No abstract record available.
Inventors
- 👤 Richard C Ingwersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:19
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H01H71/18; H01H73/00; H01H73/22; H01H73/30; H01H73/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US554557A
Cited
DE394057C
Cited
US1046499A
Cited
CH91711A
Cited
DE383105C
Cited
DE443870C
Cited
US1627029A
Cited
US1990122A
Cited
AT147220B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |