US143626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in divided-nut devices for feed-screws
Assignee: —
•
Filing: —
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Granted: 1873-10-14
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Expires: 1890-10-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:03
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/081; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19735; Y10T74/1974; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2537; Y10T82/2539
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) | 1876-10-13 | 1877-04-14 | 1877-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1880-10-13 | 1881-04-14 | 1881-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1884-10-13 | 1885-04-14 | 1885-10-14 | $7700.00 | Window Closed / Lapsed |