US2694383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure fluid driven hammer piston for hammer drills and other percussion tools
Assignee: Atlas Copco AB
•
Filing: 1949-03-29
•
Granted: 1954-11-16
•
Expires: 1969-03-29
Abstract
No abstract record available.
Inventors
- 👤 Larcen Jan August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:37
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US152541A
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US568395A
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US669599A
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US1257762A
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US1405375A
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US1553261A
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US1446879A
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US1490633A
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US1665046A
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US1789117A
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US2472352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |