US2675455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for electric cooking ovens
Assignee: Hart Manufacturing Co
•
Filing: 1950-09-14
•
Granted: 1954-04-13
•
Expires: 1970-09-14
Abstract
No abstract record available.
Inventors
- 👤 Douglas W Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:37
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2177281A
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US2201584A
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US2203236A
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US2203224A
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US2295298A
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US2402354A
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US2218778A
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US2442900A
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US2402787A
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US2388839A
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US2483831A
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US2541314A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |