US2515764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for converting metals
Assignee: Individual
•
Filing: 1948-01-10
•
Granted: 1950-07-18
•
Expires: 1968-01-10
Abstract
No abstract record available.
Inventors
- 👤 Roy A Driscoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:19
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US557057A
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US611142A
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US1196202A
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US704993A
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US722411A
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US950595A
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US1208817A
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US1421185A
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US1443439A
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US1496232A
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US1585344A
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US1987952A
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US1967274A
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US2066665A
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US2108043A
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US2368508A
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US2247334A
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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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |