US2445334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic valve
Assignee: Individual
•
Filing: 1943-10-30
•
Granted: 1948-07-20
•
Expires: 1963-10-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:45
CPC Classifications
E; E21; E21D; E21D15/00; E21D15/50; E21D15/51; E21D15/512; B; B66; B66F; B66F3/00; B66F3/24; B66F3/25; B66F3/42; F; F16; F16K; F16K15/00; F16K15/18; F16K15/182; F16K2200/00; F16K2200/30; F16K2200/305; F16K2200/3053; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7772; Y10T137/7774; Y10T137/7837; Y10T137/7838; Y10T137/7842; Y10T137/8593; Y10T137/86928; Y10T137/87016; Y10T137/8704
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US514394A
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US1236583A
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US1480508A
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US1662922A
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US1994179A
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GB358692A
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US2057088A
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GB499606A
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US2309138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |