Patent US3415733A successfully refreshed from Google Patents.
US3415733A
Expired / Lapsed
US
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Frames for electrodes for the electrolytic decomposition of hydrochloric acid and method for making such frames
Assignee: Elektrochemisches Kombinat Bitterfeld Veb
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Filing: 1966-04-19
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Granted: 1968-12-10
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Expires: 1986-04-19
Abstract
No abstract record available.
Inventors
- 👤 Koch Hans-Joachim
- 👤 Berndt Karl-Heinz
- 👤 Dolle Volker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:05
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/60; C25B9/63; C25B9/70; C25B9/73; C25B9/77
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |