US2916042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Float ball check valve
Assignee: Individual
•
Filing: 1955-09-26
•
Granted: 1959-12-08
•
Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Francis E Brady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:09
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/3115; Y10T137/3127; Y10T137/3137; Y10T137/3149; Y10T137/3185; Y10T137/3294; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7871; Y10T137/7873; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/7912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US622720A
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US833093A
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US903081A
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US1458064A
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US2183421A
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US2639838A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |