Patent US1701903A successfully refreshed from Google Patents.
US1701903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic speed-ratio regulator for hydraulic couplings and changespeed gears
Assignee: Individual
•
Filing: 1922-07-17
•
Granted: 1929-02-12
•
Expires: 1942-07-17
Abstract
No abstract record available.
Inventors
- 👤 Wingquist Sven Gustaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:49
CPC Classifications
F; F16; F16H; F16H39/00; F16H39/04; F16H39/06; F16H39/22; F16H39/24
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) | 1932-02-12 | 1932-08-13 | 1933-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-02-12 | 1936-08-13 | 1937-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-02-12 | 1940-08-13 | 1941-02-12 | $7700.00 | Window Closed / Lapsed |