Patent US3482641A successfully refreshed from Google Patents.
US3482641A
Expired / Lapsed
US
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Apparatus for earth coring
Assignee: STANLEY B BAILIE
•
Filing: 1967-02-23
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Granted: 1969-12-09
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Expires: 1987-02-23
Abstract
No abstract record available.
Inventors
- 👤 Stanley G Atkins
- 👤 Stanley B Bailie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:44
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/28; E21B7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA581358A
Cited
US1370031A
Cited
GB181788A
Cited
US2288576A
Cited
US2664273A
Cited
US2923133A
Cited
US3011567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |