US2909188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excess flow valve
Assignee: Bastian Blessing Co
•
Filing: 1957-01-30
•
Granted: 1959-10-20
•
Expires: 1977-01-30
Abstract
No abstract record available.
Inventors
- 👤 Evans R Billington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:54
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/20; F16K17/22; F16K17/24; F16K17/28; F16K17/30; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6116; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7869
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US744625A
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US1125979A
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US1196861A
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US1292229A
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GB500420A
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US2404924A
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US2367662A
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US2511494A
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US2522406A
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US2886054A
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US2886061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |