US2693945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mud mixer
Assignee: Individual
•
Filing: 1951-12-01
•
Granted: 1954-11-09
•
Expires: 1971-12-01
Abstract
No abstract record available.
Inventors
- 👤 Thompson Lee Lavere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:16
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/06; E21B21/062; B; B01; B01F; B01F33/00; B01F33/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US765975A
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US1760906A
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US1829066A
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US2022205A
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US2053876A
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US1983319A
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US2213056A
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US2283487A
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US2447202A
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US2569439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |