US2555314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mud driven apparatus for treating mud
Assignee: Individual
•
Filing: 1946-07-10
•
Granted: 1951-06-05
•
Expires: 1966-07-10
Abstract
No abstract record available.
Inventors
- 👤 William L Buckley
- 👤 Swoboda John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:48
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1869655A
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US2077959A
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US2117789A
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US2156333A
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US2276262A
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US2365858A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |