US2914305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight portable diamond drill
Assignee: Caterpillar Global Mining LLC
•
Filing: 1956-09-28
•
Granted: 1959-11-24
•
Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Fredrick W Wink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:22
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/027; B; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1216047A
Cited
US1869875A
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US2250670A
Cited
US2229791A
Cited
US2598565A
Cited
US2696972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |