US431107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drilling
Assignee: —
•
Filing: —
•
Granted: 1890-07-01
•
Expires: 1907-07-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:38
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/161; B23B39/167; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/37; Y10T408/60; Y10T483/00; Y10T483/17; Y10T483/1733; Y10T483/1748; Y10T483/1752; Y10T483/1755; Y10T483/1764; Y10T483/1774; Y10T74/00; Y10T74/14; Y10T74/1494
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) | 1893-06-30 | 1893-12-30 | 1894-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-06-30 | 1897-12-30 | 1898-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-07-01 | 1901-12-31 | 1902-07-02 | $7700.00 | Window Closed / Lapsed |