US2419630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic surge valve
Assignee: United Aircraft Products Inc
•
Filing: 1943-01-07
•
Granted: 1947-04-29
•
Expires: 1963-01-07
Abstract
No abstract record available.
Inventors
- 👤 Cruzan Harold
- 👤 Edward C Warrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:34
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/12; F01M5/00; F01M5/005; F01M5/007; G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/021; G05D23/022; Y; Y10; Y10S; Y10S236/00; Y10S236/05; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/8778
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1223078A
Cited
DE419023C
Cited
US1564504A
Cited
GB421900A
Cited
US2265586A
Cited
US2275576A
Cited
US2353577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-28 | 1950-10-28 | 1951-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-28 | 1954-10-28 | 1955-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-28 | 1958-10-28 | 1959-04-29 | $7700.00 | Window Closed / Lapsed |