Patent US3520320A successfully refreshed from Google Patents.
US3520320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
By-pass and pressure relief valve
Assignee: Carter Automotive Co Inc
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Filing: 1968-01-16
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Granted: 1970-07-14
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Expires: 1988-01-16
Abstract
No abstract record available.
Inventors
- 👤 Edward N Crawford
- 👤 Jack M White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:07
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/18; F01N3/22; F01N3/227; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/08; F16K17/082; F16K17/085; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2612; Y10T137/263; Y10T137/265; Y10T137/2668; Y10T137/2693
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR809637A
Cited
US3430437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |