US2634099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic drilling machine
Assignee: Individual
•
Filing: 1946-10-10
•
Granted: 1953-04-07
•
Expires: 1966-10-10
Abstract
No abstract record available.
Inventors
- 👤 Charles M O'leary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:16
CPC Classifications
E; E21; E21B; E21B44/00; E21B19/00; E21B19/08; E21B19/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1836998A
Cited
US1937300A
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US1804779A
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US1954176A
Cited
US1925012A
Cited
US2032155A
Cited
US2126189A
Cited
US2136356A
Cited
US2168655A
Cited
US2109782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |