US2519296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for conditioning gases
Assignee: Delaware Engineering Corp
•
Filing: 1945-10-20
•
Granted: 1950-08-15
•
Expires: 1965-10-20
Abstract
No abstract record available.
Inventors
- 👤 George L Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:59
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0423; B01D53/0438; B01D53/26; B01D53/261; B01D2257/00; B01D2257/80; B01D2259/00; B01D2259/40; B01D2259/40003; B01D2259/40083; B01D2259/40086; B01D2259/402; B01D53/0431
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1986814A
Cited
US2101555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |