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US3441402A
Expired / Lapsed
US
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Continuous process for the production of magnesium
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1965-12-15
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Granted: 1969-04-29
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Expires: 1985-12-15
Abstract
No abstract record available.
Inventors
- 👤 Ellington M Magee
- 👤 Benjamin Eisenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:48
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/20; C22B26/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3114627A
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US2724644A
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US2847295A
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US2920951A
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US3129094A
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US3151977A
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US3215522A
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US3264097A
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US3375101A
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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) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |