Patent US1978065A successfully refreshed from Google Patents.
US1978065A
Expired / Lapsed
US
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Thermostatic snap switch
Assignee: C T ELECTRIC Co
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Filing: 1932-02-18
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Granted: 1934-10-23
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Expires: 1952-02-18
Abstract
No abstract record available.
Inventors
- 👤 Willard O Twombly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:26
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/64; H01H37/66; H01H1/00; H01H1/50; H01H1/54; H01H2001/545; Y; Y10; Y10S; Y10S200/00; Y10S200/27
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-10-22 | 1938-04-23 | 1938-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-22 | 1942-04-23 | 1942-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-22 | 1946-04-23 | 1946-10-23 | $7700.00 | Window Closed / Lapsed |