Patent US3496803A successfully refreshed from Google Patents.
US3496803A
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Control apparatus for double differential transmissions coupled to a free power turbine
Assignee: ARCO CORP
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Filing: 1968-07-16
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Granted: 1970-02-24
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Expires: 1988-07-16
Abstract
No abstract record available.
Inventors
- 👤 John F Whelahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:10
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/02; F16H47/04; F16H37/00; F16H37/02; F16H37/06; F16H37/08; F16H37/0833; F16H37/084; F16H2037/088; F16H2047/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2585790A
Cited
US2997892A
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US3139766A
Cited
US3327798A
Cited
US3368425A
Cited
US3442153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |