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US2992682A
Expired / Lapsed
US
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Bailer and sand pump
Assignee: CLAUDE M HARRIS
•
Filing: 1958-10-13
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Granted: 1961-07-18
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Expires: 1978-10-13
Abstract
No abstract record available.
Inventors
- 👤 Paul R Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:23
CPC Classifications
E; E21; E21B; E21B27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1911503A
Cited
US2180935A
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US1535083A
Cited
US1620985A
Cited
US1843217A
Cited
US2054606A
Cited
US2170568A
Cited
US2785756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |