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US2663788A
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Temperature control apparatus for electrode type boilers
Assignee: G W B ELECTRIC FURNACES Ltd
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Filing: 1950-11-21
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Granted: 1953-12-22
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Expires: 1970-11-21
Abstract
No abstract record available.
Inventors
- 👤 Tatem John Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:20
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/10; F24H1/101; F24H1/106
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) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |