US2897585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removal of the current supply bolts from aluminum electrolysis furnaces
Assignee: Vereinigte Aluminium Werke AG
•
Filing: 1955-06-06
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Granted: 1959-08-04
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Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Bodewein Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:25
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49721; Y10T29/49815; Y10T29/49822
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2237570A
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US2312176A
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US2722734A
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US2594810A
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US2662428A
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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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |