US2652440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc melting furnace
Assignee: Battelle Development Corp
•
Filing: 1950-07-18
•
Granted: 1953-09-15
•
Expires: 1970-07-18
Abstract
No abstract record available.
Inventors
- 👤 Orien W Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:47
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US586822A
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US1346223A
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US1496299A
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US2046117A
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US2198304A
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US2256518A
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US2363582A
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US2513082A
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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) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |