US2477406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging magnesium retorts
Assignee: Permanente Metals Corp
•
Filing: 1945-02-09
•
Granted: 1949-07-26
•
Expires: 1965-02-09
Abstract
No abstract record available.
Inventors
- 👤 Church Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:32
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/20; C22B26/22; F; F27; F27B; F27B17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US959488A
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US994550A
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US1376458A
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DE415074C
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US1714075A
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US2138356A
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US2367393A
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US2248868A
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US2362718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |