US2459148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control apparatus
Assignee: Individual
•
Filing: 1944-09-20
•
Granted: 1949-01-18
•
Expires: 1964-09-20
Abstract
No abstract record available.
Inventors
- 👤 Niels A Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:52
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; F16K31/124; B; B64; B64D; B64D37/00; B64D37/005; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87048; Y10T137/87571
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1131182A
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US1581546A
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US1658810A
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DE560948C
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US2172981A
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US2289567A
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US2296145A
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US2316944A
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US2360839A
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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) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |