US2678108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for flowing gas through a permeable adsorbent bed
Assignee: Individual
•
Filing: 1949-09-03
•
Granted: 1954-05-11
•
Expires: 1969-09-03
Abstract
No abstract record available.
Inventors
- 👤 Laurance S Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:23
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0446; B01D53/0423; B01D53/0431; B01D53/26; B01D53/261; B01D2257/00; B01D2257/80; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40084; B01D2259/40088; B01D2259/4009; B01D2259/41; B01J; B01J2219/00; B01J2219/18; B01J2219/182
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |