Patent US2602211A successfully refreshed from Google Patents.
Patent US2199411A successfully refreshed from Google Patents.
Patent US1497194A successfully refreshed from Google Patents.
Patent US1423276A successfully refreshed from Google Patents.
US216023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in boring and reaming tools
Assignee: —
•
Filing: —
•
Granted: 1879-06-03
•
Expires: 1896-06-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
B; B23; B23G; B23G5/00; B23G5/02; B23G5/06; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/902; Y10T408/904; Y10T408/9044; Y10T408/9045; Y10T408/905; Y10T408/909; Y10T408/9098; Y10T408/90993
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1882-06-02 | 1882-12-02 | 1883-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-06-02 | 1886-12-02 | 1887-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-06-02 | 1890-12-02 | 1891-06-03 | $7700.00 | Window Closed / Lapsed |