Patent US3502109A successfully refreshed from Google Patents.
US3502109A
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US
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Quick response pilot operated valve
Assignee: Dana Inc
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Filing: 1967-12-07
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Granted: 1970-03-24
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Expires: 1987-12-07
Abstract
No abstract record available.
Inventors
- 👤 Dwaine D Straight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:27
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F15B13/043; F16K31/00; F16K31/12; F16K31/42; F16K31/423; F16K31/426; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/86614
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3209782A
Cited
US2916051A
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US3304953A
Cited
US3315702A
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US3340897A
Cited
US3386457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |