Patent US2027259A successfully refreshed from Google Patents.
Patent US159450A successfully refreshed from Google Patents.
US159450A
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US
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Improvement in rectifying and oxygenating apparatus
Assignee: —
•
Filing: —
•
Granted: 1875-02-02
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Expires: 1892-02-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:21
CPC Classifications
A; A23; A23L; A23L2/00; A23L2/70; A23L2/80; A23F; A23F5/00; A23F5/20; A23F5/22; A23F5/223
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) | 1878-02-01 | 1878-08-03 | 1879-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1882-02-01 | 1882-08-03 | 1883-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1886-02-01 | 1886-08-03 | 1887-02-02 | $7700.00 | Window Closed / Lapsed |