US3011569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed controlling device for a rock drilling mechanism
Assignee: Ibis Enterprises Ltd
•
Filing: 1951-09-25
•
Granted: 1961-12-05
•
Expires: 1971-09-25
Abstract
No abstract record available.
Inventors
- 👤 George M Dick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:03
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR423578A
Cited
US1690859A
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US1774186A
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US1928700A
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US2075572A
Cited
US2289465A
Cited
US2274728A
Cited
US2461528A
Cited
US2908482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |