US2909196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow restrictor
Assignee: Individual
•
Filing: 1956-10-11
•
Granted: 1959-10-20
•
Expires: 1976-10-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert F Jeffreys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:10
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/02; F16L55/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1583464A
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US2324237A
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Cited
US2407050A
Cited
US2331324A
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US2389038A
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US2593420A
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US2501593A
Cited
US2752951A
Cited
US2791239A
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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) | 1962-10-19 | 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 |