Patent US565121A successfully refreshed from Google Patents.
Patent US129353A successfully refreshed from Google Patents.
US129353A
Expired / Lapsed
US
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Improvement in operating oil-wells by compressed air
Assignee: —
•
Filing: —
•
Granted: 1872-07-16
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Expires: 1889-07-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:44
CPC Classifications
F; F04; F04F; F04F1/00; F04F1/06
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) | 1875-07-16 | 1876-01-15 | 1876-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1879-07-16 | 1880-01-15 | 1880-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1883-07-16 | 1884-01-15 | 1884-07-16 | $7700.00 | Window Closed / Lapsed |