Patent US497738A successfully refreshed from Google Patents.
US497738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring-mill
Assignee: —
•
Filing: —
•
Granted: 1893-05-16
•
Expires: 1910-05-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:22
CPC Classifications
B; B23; B23Q; B23Q39/00; B23Q39/04; B23Q39/042; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3806; Y10T408/3809; Y10T408/381; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305544; Y10T409/305656
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) | 1896-05-15 | 1896-11-14 | 1897-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1900-05-16 | 1900-11-15 | 1901-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1904-05-16 | 1904-11-15 | 1905-05-17 | $7700.00 | Window Closed / Lapsed |