Patent US2485821A successfully refreshed from Google Patents.
US234066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill-chuck
Assignee: —
•
Filing: —
•
Granted: 1880-11-02
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Expires: 1897-11-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:44
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/113; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17854; Y10T279/17888; Y10T408/00; Y10T408/89; Y10T408/907; Y10T408/94; Y10T408/95
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) | 1883-11-02 | 1884-05-03 | 1884-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1887-11-02 | 1888-05-03 | 1888-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1891-11-02 | 1892-05-03 | 1892-11-02 | $7700.00 | Window Closed / Lapsed |