Patent US2481630A successfully refreshed from Google Patents.
US2481630A
Expired / Lapsed
US
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Heater control
Assignee: Stewart Warner Corp
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Filing: 1945-12-08
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Granted: 1949-09-13
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Expires: 1965-12-08
Abstract
No abstract record available.
Inventors
- 👤 Vernon N Tramontini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:34
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/22; B60H1/2203; B60H1/2212; B60N; B60N2/00; B60N2/56; B60N2/5607; B60N2/5621; B60N2/5628; B60H2001/2228; B60H2001/224; Y; Y10; Y10S; Y10S236/00; Y10S236/19
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) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |