US2832402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annular pilot burner for combustion heaters
Assignee: Douglas Aircraft Co Inc
•
Filing: 1952-04-14
•
Granted: 1958-04-29
•
Expires: 1972-04-14
Abstract
No abstract record available.
Inventors
- 👤 Peter L Jurisich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:55
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/26; F02C7/264; F02K; F02K3/00; F02K3/08; F02K3/10; F23; F23N; F23N2239/00; F23N2239/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1497099A
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US2482988A
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US2518000A
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US2592110A
Cited
US2632300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |