US2942852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically driven percussion drill, particularly for drilling rock, earth, and synthetic substances
Assignee: Individual
•
Filing: 1957-01-24
•
Granted: 1960-06-28
•
Expires: 1977-01-24
Abstract
No abstract record available.
Inventors
- 👤 Muthmann Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:46
CPC Classifications
B; B25; B25D; B25D11/00; B25D11/06; B25D11/10; B25D11/102; B25D11/106; B23; B23B; B23B45/00; B25D2211/00; B25D2211/06; B25D2211/062; B25D2211/064; B25D2211/067; B25D2250/00; B25D2250/005; B25D2250/021; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |