US3061024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water tube construction for down-the-hole drills
Assignee: Ingersoll Rand Co
•
Filing: 1958-06-11
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Granted: 1962-10-30
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Expires: 1978-06-11
Abstract
No abstract record available.
Inventors
- 👤 Robert L Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:24
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/20; E21B4/06; E21B4/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1005770A
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US1053621A
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US1481255A
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US1891416A
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US1868400A
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US2810549A
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US2850264A
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US2818230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |