US1898700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-speed mechanism
Assignee: CLARENCE H DRAY
•
Filing: 1932-04-20
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Granted: 1933-02-21
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Expires: 1952-04-20
Abstract
No abstract record available.
Inventors
- 👤 Charles M Wert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:36
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/048; F16H57/0482; F16H57/0483; F16H3/00; F16H3/44; F16H3/62; F16H3/64; F16H57/042; F16H57/0421; F16H37/00; F16H37/02; F16H37/04; F16H37/042; F16H37/046; F16H48/00; F16H48/06; F16H48/08
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) | 1936-02-21 | 1936-08-22 | 1937-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-02-21 | 1940-08-22 | 1941-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-02-21 | 1944-08-22 | 1945-02-21 | $7700.00 | Window Closed / Lapsed |