US2765271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cleaning method
Assignee: Armco Inc
•
Filing: 1951-10-11
•
Granted: 1956-10-02
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Expires: 1971-10-11
Abstract
No abstract record available.
Inventors
- 👤 John F Kreml
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:31
CPC Classifications
C; C25; C25F; C25F1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US108510A
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GB101667A
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US1894670A
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US2046440A
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US2080234A
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US2037633A
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US2253334A
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US2244620A
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US2442592A
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US2503863A
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US2492214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |