US3498903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic diaphragm cell for production of chlorine,hydrogen and alkalies
Assignee: GEORGY MIKIRTIECHEVICH KAMARJA
•
Filing: 1964-03-04
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Granted: 1970-03-03
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Expires: 1984-03-04
Abstract
No abstract record available.
Inventors
- 👤 Georgy Mikirtiechevic Kamarjan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:50
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17; C25B9/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA600441A
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US804931A
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US1471641A
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US1771091A
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US2414741A
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US2447547A
Cited
US2987463A
Cited
US3030295A
Cited
US3247090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |