Patent US2476378A successfully refreshed from Google Patents.
US2476378A
Expired / Lapsed
US
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Valve assembly
Assignee: WARNER AIRCRAFT CORP
•
Filing: 1945-03-12
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Granted: 1949-07-19
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Expires: 1965-03-12
Abstract
No abstract record available.
Inventors
- 👤 Ludwig A Majneri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:47
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/02; B64C25/08; B64C25/10; B64C25/18; B64C25/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US722872A
Cited
US1438928A
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US1699217A
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US1667580A
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US2001620A
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US2099368A
Cited
US2123477A
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US2294918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |