US2592352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Lindberg Engineering Co
•
Filing: 1946-05-02
•
Granted: 1952-04-08
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Expires: 1966-05-02
Abstract
No abstract record available.
Inventors
- 👤 William H Speck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:30
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; F16K11/168; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86911; Y10T137/87056; Y10T137/87064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US965270A
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US1016167A
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GB372876A
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US1992732A
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US2299719A
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US2393805A
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US2396643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |