US2767739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature responsive modulating valves
Assignee: English Electric Co Ltd
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Filing: 1954-09-13
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Granted: 1956-10-23
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Expires: 1974-09-13
Abstract
No abstract record available.
Inventors
- 👤 Hughes John Oliver Philip
- 👤 Starmer Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:12
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/20; F16K17/34; F02; F02C; F02C7/00; F02C7/22; F02C7/232; F02C9/00; F02C9/26; F02C9/28; F16K31/00; F16K31/002; F05; F05D; F05D2270/00; F05D2270/30; F05D2270/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |