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Patent US2400615A successfully refreshed from Google Patents.
US2400615A
Expired / Lapsed
US
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Thermostatic surge valve
Assignee: United Aircraft Products Inc
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Filing: 1944-01-10
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Granted: 1946-05-21
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Expires: 1964-01-10
Abstract
No abstract record available.
Inventors
- 👤 Edward C Warrick
- 👤 Cruzan Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:17
CPC Classifications
F; F01; F01M; F01M5/00; F01M5/005; F01M5/007; G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/132; G05D23/1333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-05-20 | 1949-11-19 | 1950-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-05-20 | 1953-11-19 | 1954-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-05-20 | 1957-11-19 | 1958-05-21 | $7700.00 | Window Closed / Lapsed |