Patent US2044397A successfully refreshed from Google Patents.
US2044397A
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US
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Temperature responsive switch
Assignee: Penn Electric Switch Co
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Filing: 1933-10-16
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Granted: 1936-06-16
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Expires: 1953-10-16
Abstract
No abstract record available.
Inventors
- 👤 Lawrence M Persons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:34
CPC Classifications
D; D06; D06F; D06F71/00; D06F71/32; D06F71/34; H; H01; H01H; H01H37/00; H01H37/02; H01H37/04; Y; Y10; Y10S; Y10S236/00; Y10S236/06
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) | 1939-06-16 | 1939-12-16 | 1940-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-06-16 | 1943-12-16 | 1944-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-06-16 | 1947-12-16 | 1948-06-16 | $7700.00 | Window Closed / Lapsed |