Patent US3056390A successfully refreshed from Google Patents.
US3056390A
Expired / Lapsed
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Internal combustion percussion tools and hammer pistons for such tools
Assignee: Atlas Copco AB
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Filing: 1959-03-31
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Granted: 1962-10-02
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Expires: 1979-03-31
Abstract
No abstract record available.
Inventors
- 👤 Nyholm Bengt Viktor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:26
CPC Classifications
B; B25; B25D; B25D9/00; B25D9/06; B25D9/10; E; E21; E21B; E21B1/00; E21B1/12; E21B1/24; E21B1/30; E21B1/32; E21B1/34; E21B6/00; E21B6/06; E21B6/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920765A
Cited
US2479593A
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US2686501A
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US2764138A
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US2854962A
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US2857988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |