Patent US1838805A successfully refreshed from Google Patents.
Patent US2569027A successfully refreshed from Google Patents.
US2569027A
Expired / Lapsed
US
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Lightweight solenoid valve
Assignee: United Aircraft Products Inc
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Filing: 1945-02-12
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Granted: 1951-09-25
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Expires: 1965-02-12
Abstract
No abstract record available.
Inventors
- 👤 Francis E Stoner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:18
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K31/0658
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR485384A
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US1629815A
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US2096763A
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US2114961A
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US2181423A
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US2291599A
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US2290177A
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US2353835A
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US2366006A
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US2399843A
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US2402950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |