Patent US2440825A successfully refreshed from Google Patents.
US2440825A
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US
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Rotary hydraulic torque converter
Assignee: Bendix Aviation Corp
•
Filing: 1943-06-30
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Granted: 1948-05-04
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Expires: 1963-06-30
Abstract
No abstract record available.
Inventors
- 👤 Jandasek Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:47
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/48; F16H61/50; F16H61/52; F16H61/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US110915A
Cited
DE332927C
Cited
US1825768A
Cited
US2186025A
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US2271919A
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US1942721A
Cited
DE617173C
Cited
US2200596A
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US2168862A
Cited
US2235605A
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US2235370A
Cited
US2293766A
Cited
US2245251A
Cited
US2169849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |