Patent US446934A successfully refreshed from Google Patents.
US446934A
Expired / Lapsed
US
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Making rolled forcings non-circular in cross-section
Assignee: —
•
Filing: —
•
Granted: 1891-02-24
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Expires: 1908-02-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:04
CPC Classifications
B; B21; B21H; B21H5/00; B21H5/02; B21H5/027; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49467; Y10T29/49471
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) | 1894-02-23 | 1894-08-25 | 1895-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1898-02-23 | 1898-08-25 | 1899-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1902-02-24 | 1902-08-26 | 1903-02-25 | $7700.00 | Window Closed / Lapsed |