Patent US249487A successfully refreshed from Google Patents.
US249487A
Expired / Lapsed
US
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Means for separating water and gas from oil
Assignee: —
•
Filing: —
•
Granted: 1881-11-15
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Expires: 1898-11-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:12
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/34; B; B01; B01D; B01D19/00; B01D19/0042; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8013
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) | 1884-11-14 | 1885-05-16 | 1885-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1888-11-14 | 1889-05-16 | 1889-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1892-11-14 | 1893-05-16 | 1893-11-15 | $7700.00 | Window Closed / Lapsed |