Patent US2701533A successfully refreshed from Google Patents.
US2701533A
Expired / Lapsed
US
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Gas and sand separator
Assignee: Individual
•
Filing: 1950-09-20
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Granted: 1955-02-08
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Expires: 1970-09-20
Abstract
No abstract record available.
Inventors
- 👤 Abney Ira Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:40
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/34; E21B43/38; E21B43/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US33736A
Cited
US1466199A
Cited
US1518028A
Cited
US1751017A
Cited
US2029323A
Cited
US2005767A
Cited
US2291378A
Cited
US2429043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |