US3479261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical method for recovery of sulfur oxides
Assignee: Boeing North American Inc
•
Filing: 1967-05-15
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Granted: 1969-11-18
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Expires: 1987-05-15
Abstract
No abstract record available.
Inventors
- 👤 Laszlo A Heredy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:23
CPC Classifications
C; C25; C25B; C25B1/00; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/507; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/60; C01B17/69; C01B17/74; C01B17/745; C25B1/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3085053A
Cited
FR1437484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |