US3238069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-resistant gas-diffusion electrode
Assignee: BBC Brown Boveri AG Germany
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Filing: 1963-01-17
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Granted: 1966-03-01
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Expires: 1983-01-17
Abstract
No abstract record available.
Inventors
- 👤 Guth Egbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:53
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/9041; H01M4/8605; H01M4/8621; H01M4/8626; H01M2004/8678; H01M2004/8689; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2175523A
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US2276188A
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US2901523A
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US2947797A
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US2969315A
Cited
US3035998A
Cited
US3012086A
Cited
GB871950A
Cited
US3101285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |