US2704658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mud agitator
Assignee: —
•
Filing: —
•
Granted: 1955-03-22
•
Expires: 1972-03-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:10
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/06; E21B21/063; E21B21/067; B; B01; B01F; B01F27/00; B01F27/80; B01F27/91; E21B21/062; Y; Y10; Y10S; Y10S366/00; Y10S366/601
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1721553A
Cited
US2338174A
Cited
US2370817A
Cited
US2358679A
Cited
US2400046A
Cited
US2514690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |