Patent US2471179A successfully refreshed from Google Patents.
US2471179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrokinetic torque converter
Assignee: Individual
•
Filing: 1943-01-23
•
Granted: 1949-05-24
•
Expires: 1963-01-23
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Wemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:03
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/48; F16H61/50; F16H61/52; F16H61/56
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CH94287A
Cited
DE332927C
Cited
FR536735A
Cited
US1993741A
Cited
US1900120A
Cited
US2271919A
Cited
US2162543A
Cited
CH177014A
Cited
CH181173A
Cited
FR769904A
Cited
US2205794A
Cited
GB517875A
Cited
US2287374A
Cited
US2294351A
Cited
US2318187A
Cited
US2317938A
Cited
US2387415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |