US2671471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angular flow control fitting
Assignee: PAUL A DEWHIRST
•
Filing: 1948-10-18
•
Granted: 1954-03-09
•
Expires: 1968-10-18
Abstract
No abstract record available.
Inventors
- 👤 Leland S Hamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:55
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/312
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1575259A
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US844255A
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US1298173A
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US1251235A
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FR498049A
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US1841789A
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FR706026A
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US2340499A
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US2339970A
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US2425934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |