Patent US2638746A successfully refreshed from Google Patents.
US2638746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control for rotary turbine type hydraulic torque converters
Assignee: Motors Liquidation Co
•
Filing: 1949-11-30
•
Granted: 1953-05-19
•
Expires: 1969-11-30
Abstract
No abstract record available.
Inventors
- 👤 Oliver K Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:12
CPC Classifications
F; F16; F16H; F16H41/00; F16H41/24; F16H41/30; Y; Y10; Y10S; Y10S60/00; Y10S60/912
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2143312A
Cited
US1640608A
Cited
US2423812A
Cited
US2357295A
Cited
US2343304A
Cited
US2322577A
Cited
US2459734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |