Patent US3702815A successfully refreshed from Google Patents.
US3702815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode casing of electrolyzer for producing aluminium
Assignee: VNI PI ALJUMINIEVOI MAGNIEVOI
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Filing: 1971-04-22
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Granted: 1972-11-14
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Expires: 1991-04-22
Abstract
Abstract A CATHODE CASING OF AN ELECTROLYZER FOR PRODUCING ALUMINUM WHICH CASING CONSISTS OF A BOX STRUCTURE HAVING EXTERNAL HORIZONTAL BEAMS DISPOSED ALONG TRANSVERSE SIDES AND BOTTOM OF THE BOX STRUCTURE AND HAVING VERTICAL BEAMS DISPOSED ALONG THE LONGITUDINAL SIDES THEROF. THE VERTICAL BEAMS ARE HINGED WITH THE BOTTOM OF THE BOX STRUCTURE, WHILE THE LOWER ENDS OF THESE BEAMS ARE INTERCONNECTED IN PAIRS THROUGH SPACER MEMBERS.
Inventors
- 👤 Vladimir Pavlovich Nikiforov
- 👤 Vasily Nikolaevich Zaitsev
- 👤 Viktor Stepanovich Khomyakov
- 👤 Ilia Genrikhovich Kil
- 👤 Igor Kirillovich Tsybukov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:50
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |