US3516867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell system with dehumidifier and humidifier
Assignee: General Electric Co
•
Filing: 1968-01-10
•
Granted: 1970-06-23
•
Expires: 1988-01-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Dankese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:43
CPC Classifications
H; H01; H01M; H01M8/00; B; B01; B01D; B01D1/00; B01D3/00; B01D47/00; B01D53/00; B01D53/14; B01D53/18; B01D53/22; B01D53/26; B01D63/00; B01D63/08; B01D63/089; B01F; B01F23/00; F; F28; F28D; F28D21/00; F28D21/0015; B01D2313/00; B01D2313/22; B01D2313/221; B01D2313/42; B01D2317/00; B01D2317/02; B01D2317/04; Y; Y10; Y10S; Y10S261/00; Y10S261/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3061658A
Cited
US3112228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |