US187600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in tool-holders
Assignee: —
•
Filing: —
•
Granted: 1877-02-20
•
Expires: 1894-02-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:42
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/02; B23B29/025; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17008; Y10T408/00; Y10T408/31; Y10T408/36; Y10T408/37; Y10T408/60; 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) | 1880-02-20 | 1880-08-21 | 1881-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1884-02-20 | 1884-08-21 | 1885-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1888-02-20 | 1888-08-21 | 1889-02-20 | $7700.00 | Window Closed / Lapsed |