Patent US3329906A successfully refreshed from Google Patents.
US3329906A
Expired / Lapsed
US
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Device for detecting the presence of metallic objects in magnetic ore
Assignee: ABB Norden Holding AB
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Filing: 1965-10-21
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Granted: 1967-07-04
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Bringert Goran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:20
CPC Classifications
B; B65; B65F; B65F1/00; B65F1/0033; B65F2210/00; B65F2210/112; B65F2210/1125; B65F2210/128; B65F2210/132; B65F2210/144; B65F2210/1443; B65F2210/148; B65F2210/162; B65F2210/169; Y; Y02; Y02W; Y02W30/00; Y02W30/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2576173A
Cited
US2919413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |