US2663996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary hydraulic torque converter
Assignee: Individual
•
Filing: 1949-03-26
•
Granted: 1953-12-29
•
Expires: 1969-03-26
Abstract
No abstract record available.
Inventors
- 👤 Edward A Stalker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:09
CPC Classifications
F; F16; F16H; F16H41/00; F16H41/24; F16H41/26; Y; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1760480A
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US1900118A
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US2061997A
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US2074170A
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US2168862A
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US2371589A
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US2378353A
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US2324693A
Cited
US2388329A
Cited
US2428134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |