US3410783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical cell for separation of gaseous mixtures
Assignee: Allis Chalmers Corp
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Filing: 1966-02-02
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Granted: 1968-11-12
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Expires: 1986-02-02
Abstract
No abstract record available.
Inventors
- 👤 Scott S Tomter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:38
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/02; C01; C01B; C01B13/00; C01B13/02; C01B13/0229; C01B13/0233; C01B3/00; C01B3/50; C01B3/501; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2210/00; C01B2210/0043; C01B2210/0046; C01B2210/0078; Y; Y02; Y02P; Y02P20/00; Y02P20/141
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) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |