US481443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiral-spring-coiling machine
Assignee: —
•
Filing: —
•
Granted: 1892-08-23
•
Expires: 1909-08-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:06
CPC Classifications
B; B21; B21F; B21F3/00; B21F3/02; B21F3/04; B21C; B21C47/00; B21C47/02; B21C47/08
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) | 1895-08-23 | 1896-02-22 | 1896-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1899-08-23 | 1900-02-22 | 1900-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1903-08-24 | 1904-02-23 | 1904-08-24 | $7700.00 | Window Closed / Lapsed |