Patent US3539337A successfully refreshed from Google Patents.
US3539337A
Expired / Lapsed
US
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Production of iron oxide and iron free of manganese
Assignee: SAFT Societe des Accumulateurs Fixes et de Traction SA
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Filing: 1967-12-12
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Granted: 1970-11-10
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Expires: 1987-12-12
Abstract
No abstract record available.
Inventors
- 👤 Douchan Stanimirovitch
- 👤 Andre Leon Kahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:16
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/14; C01G49/02; C01G49/06; Y; Y10; Y10S; Y10S423/00; Y10S423/01; Y10S423/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2866686A
Cited
US2773743A
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FR1072744A
Cited
US2767076A
Cited
US3036889A
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US3434947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |