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US2485826A
Expired / Lapsed
US
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Well drilling means
Assignee: Individual
•
Filing: 1948-04-19
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Granted: 1949-10-25
•
Expires: 1968-04-19
Abstract
No abstract record available.
Inventors
- 👤 Peter J Harinck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:14
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/20; E21B10/00; E21B10/64; E21B10/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US332688A
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US449613A
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US465103A
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US747575A
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US833240A
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US1640264A
Cited
US1710998A
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US1739846A
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US2099859A
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US2239996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |