US2469740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc furnace with lift and swing aside roof
Assignee: DEIAWARE ENGINEERING Corp
•
Filing: 1946-01-31
•
Granted: 1949-05-10
•
Expires: 1966-01-31
Abstract
No abstract record available.
Inventors
- 👤 William E Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:24
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/18; F27D1/1808; F27D1/1816; F27D11/00; F27D11/08; F27B; F27B3/00; F27B3/06; F27B3/065; F27D2001/1825; F27D2001/1841; F27D3/00; F27D2003/0034; F27D2003/0065; F27D2003/0078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US30633A
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US588600A
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US980951A
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US1004925A
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US1096323A
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US1100994A
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US1655478A
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US1658071A
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US2114230A
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US2261587A
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US2396663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |