Patent US1157902A successfully refreshed from Google Patents.
US1157902A
Expired / Lapsed
US
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Apparatus for preventing the emulsification of oil from wells.
Assignee: Individual
•
Filing: 1915-06-23
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Granted: 1915-10-26
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Expires: 1935-06-23
Abstract
No abstract record available.
Inventors
- 👤 John E Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:26
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; F16K31/22; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3006; Y10T137/4673; Y10T137/469
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) | 1918-10-25 | 1919-04-26 | 1919-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-10-25 | 1923-04-26 | 1923-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-10-25 | 1927-04-26 | 1927-10-26 | $7700.00 | Window Closed / Lapsed |