US2945478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency response valve
Assignee: Westinghouse Electric Corp
•
Filing: 1957-06-19
•
Granted: 1960-07-19
•
Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Clinton R Hanna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:29
CPC Classifications
B; B64; B64C; B64C13/00; B64C13/24; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/8659; Y10T137/86598
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2209735A
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US2584125A
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US2517081A
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US2582088A
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US2698023A
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US2635581A
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US2709421A
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US2767689A
Cited
US2834363A
Cited
US2878825A
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US2880708A
Cited
US2835265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |