Patent US421902A successfully refreshed from Google Patents.
US421902A
Expired / Lapsed
US
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Driving-gear for traction-engines
Assignee: —
•
Filing: —
•
Granted: 1890-02-25
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Expires: 1907-02-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:44
CPC Classifications
A; A45; A45C; A45C5/00; A45C5/02; F; F16; F16H; F16H48/00; F16H48/20; F16H2048/201
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) | 1893-02-24 | 1893-08-26 | 1894-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-02-24 | 1897-08-26 | 1898-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-02-25 | 1901-08-27 | 1902-02-26 | $7700.00 | Window Closed / Lapsed |