US3446231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil burner valve
Assignee: Sundstrand Corp
•
Filing: 1966-11-25
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Granted: 1969-05-27
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Expires: 1986-11-25
Abstract
No abstract record available.
Inventors
- 👤 Karl G Magnusson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:09
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/28; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2579; Y10T137/2582; Y10T137/2584; Y10T137/2587; Y10T137/2605; Y10T137/2617; Y10T137/262
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) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |