Patent US3406765A successfully refreshed from Google Patents.
US3406765A
Expired / Lapsed
US
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Soil sampling apparatus
Assignee: Noble Research Institute LLC
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Filing: 1965-10-14
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Granted: 1968-10-22
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Expires: 1985-10-14
Abstract
No abstract record available.
Inventors
- 👤 Jack P Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:46
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/027; E21B7/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1362775A
Cited
US1604896A
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US1814093A
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US2416036A
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US2881844A
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US3224512A
Cited
US3190375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |