Patent US2504516A successfully refreshed from Google Patents.
US2504516A
Expired / Lapsed
US
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Electrically heated oven
Assignee: Trumbull Electric Manufacturing Co
•
Filing: 1944-09-30
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Granted: 1950-04-18
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Expires: 1964-09-30
Abstract
No abstract record available.
Inventors
- 👤 Goodell Paul Homer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:12
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/0014
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2387804A
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US2346234A
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US2418283A
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US2419643A
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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) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |