US3524469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check valve
Assignee: HOWARD S JEBE
•
Filing: 1968-01-25
•
Granted: 1970-08-18
•
Expires: 1988-01-25
Abstract
No abstract record available.
Inventors
- 👤 Howard S Jebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:08
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/025; F16K15/026; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US863449A
Cited
US2327600A
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US2649277A
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US2768994A
Cited
US2912000A
Cited
US3002528A
Cited
US3084709A
Cited
US3334649A
Cited
US3335750A
Cited
US3412931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |