Patent US812888A successfully refreshed from Google Patents.
US812888A
Expired / Lapsed
US
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Speed-changing mechanism.
Assignee: Individual
•
Filing: 1904-07-05
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Granted: 1906-02-20
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Expires: 1924-07-05
Abstract
No abstract record available.
Inventors
- 👤 Peter Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:42
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/20; F16H3/34; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19358; Y10T74/19363
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) | 1909-02-19 | 1909-08-21 | 1910-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-02-19 | 1913-08-21 | 1914-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-02-19 | 1917-08-21 | 1918-02-20 | $7700.00 | Window Closed / Lapsed |