US3049305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering substantially clean magnetic metal pieces and magnetic oxides from steel plant debris
Assignee: Spang and Co
•
Filing: 1960-02-16
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Granted: 1962-08-14
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Expires: 1980-02-16
Abstract
No abstract record available.
Inventors
- 👤 Frank E Rath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:06
CPC Classifications
C; C22; C22B; C22B7/00; C22B7/04; B; B03; B03C; B03C1/00; B03C1/005; C21; C21B; C21B3/00; C21B3/04; C21B3/06; C22B1/00; C22B1/005; C22B1/02; C22B1/14; C21B2400/00; C21B2400/02; C21B2400/022; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US772377A
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US1458387A
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US2264204A
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US2352712A
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DE956826C
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US2721035A
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US2971703A
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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) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |