Patent US5499259A successfully refreshed from Google Patents.
Patent US1686475A successfully refreshed from Google Patents.
US1686475A
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US
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Method of and apparatus for causing oil to flow through pipe lines
Assignee: Individual
•
Filing: 1925-04-11
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Granted: 1928-10-02
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Expires: 1945-04-11
Abstract
No abstract record available.
Inventors
- 👤 Louis W Southgate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:34
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/12; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/2931; Y10T137/3109; Y10T137/402; Y10T137/4673; Y10T137/6416; Y10T137/6443; Y10T137/6851; Y10T137/7039; Y10T137/7287; Y10T137/7303; Y10T137/7358; Y10T137/7413; Y10T137/8158; Y10T137/8175; Y10T137/8593; Y10T137/85954; Y10T137/85978; Y10T137/86131; Y10T137/86187; Y10T137/87571
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) | 1931-10-02 | 1932-04-02 | 1932-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-10-02 | 1936-04-02 | 1936-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-10-02 | 1940-04-02 | 1940-10-02 | $7700.00 | Window Closed / Lapsed |