US3397511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desiccant-type air dryer employing heat for reactivation
Assignee: General Electric Co
•
Filing: 1965-03-31
•
Granted: 1968-08-20
•
Expires: 1985-03-31
Abstract
No abstract record available.
Inventors
- 👤 Peter W Dwyer
- 👤 George L Couch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:06
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D53/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1714245A
Cited
US2584889A
Cited
US2790505A
Cited
US2975860A
Cited
US2955673A
Cited
US3193985A
Cited
US3147095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |