US92014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved rock-drill
Assignee: —
•
Filing: —
•
Granted: 1869-06-29
•
Expires: 1886-06-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/32; Y; Y10; Y10T; Y10T74/00; Y10T74/17; Y10T74/173
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1872-06-28 | 1872-12-28 | 1873-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1876-06-28 | 1876-12-28 | 1877-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1880-06-28 | 1880-12-28 | 1881-06-29 | $7700.00 | Window Closed / Lapsed |