US2751718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock drill grinders
Assignee: Atlas Copco AB
•
Filing: 1951-09-10
•
Granted: 1956-06-26
•
Expires: 1971-09-10
Abstract
No abstract record available.
Inventors
- 👤 Falkman Hans Hugo
- 👤 Olsson Erik Magnus
- 👤 Soderblom Per Olof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:59
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/24; B24B3/33
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1995027A
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US2088402A
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US2251702A
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US2375703A
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US2409415A
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US2528511A
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US2490244A
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US2619779A
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US2627143A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |