Patent US3439703A successfully refreshed from Google Patents.
US3439703A
Expired / Lapsed
US
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Flow control valve for blow-by gas
Assignee: Toyota Motor Corp
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Filing: 1967-06-06
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Granted: 1969-04-22
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Expires: 1987-06-06
Abstract
No abstract record available.
Inventors
- 👤 Tadahide Toda
- 👤 Mitsumasa Yamada
- 👤 Haruyuki Obata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:37
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F01M13/023; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7748; Y10T137/7749; Y10T137/7837; Y10T137/7847; Y10T137/7848; Y10T137/7904; Y10T137/7922; Y10T137/7929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1509520A
Cited
US2516825A
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US2574851A
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US2742057A
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US3111138A
Cited
US3164141A
Cited
US3365166A
Cited
US3305207A
Cited
US3359960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |