US2498039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic circuit breaker with contact arc prevention
Assignee: Metals and Controls Corp
•
Filing: 1945-05-12
•
Granted: 1950-02-21
•
Expires: 1965-05-12
Abstract
No abstract record available.
Inventors
- 👤 Townsend M Gunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:13
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US505860A
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US1085266A
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US1697886A
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US1705701A
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US1784226A
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US1830578A
Cited
DE591594C
Cited
US2080178A
Cited
CH179232A
Cited
US2157886A
Cited
US2361162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |