US2563913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gang bit core drilling apparatus
Assignee: Individual
•
Filing: 1948-02-27
•
Granted: 1951-08-14
•
Expires: 1968-02-27
Abstract
No abstract record available.
Inventors
- 👤 Joe G Binney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:31
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/02; E21B10/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US417352A
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US1419068A
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US1338601A
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US1391626A
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US1375092A
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US1634087A
Cited
US2194066A
Cited
US2283866A
Cited
US2317306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |