US2541900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple fuel jet burner and torch igniter unit with fuel vaporizing tubes
Assignee: AV Roe Canada Ltd
•
Filing: 1948-12-24
•
Granted: 1951-02-13
•
Expires: 1968-12-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick D M Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:44
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F23R3/30; F23R3/32; F02; F02C; F02C7/00; F02C7/26; F02C7/264; F02C7/266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2404335A
Cited
GB603485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |