US928978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for regenerating vitiated air.
Assignee: Individual
•
Filing: 1907-08-22
•
Granted: 1909-07-27
•
Expires: 1927-08-22
Abstract
No abstract record available.
Inventors
- 👤 George Francois Jaubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
A; A62; A62B; A62B21/00; B; B01; B01D; B01D2255/00; B01D2255/80; B01D2255/802
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1912-07-26 | 1913-01-25 | 1913-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-07-26 | 1917-01-25 | 1917-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-07-26 | 1921-01-25 | 1921-07-27 | $7700.00 | Window Closed / Lapsed |