US2940255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner flame length control apparatus
Assignee: JET HEET Inc
•
Filing: 1954-01-07
•
Granted: 1960-06-14
•
Expires: 1974-01-07
Abstract
No abstract record available.
Inventors
- 👤 Calvin D Maccracken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:50
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/02; F23N1/025; F02; F02C; F02C7/00; F02C7/26; F02C7/262; F23N5/00; F23N5/02; F23N5/12; F23N5/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2052181A
Cited
US2336232A
Cited
GB683391A
Cited
US2538642A
Cited
US2589074A
Cited
US2799136A
Cited
US2742756A
Cited
US2715815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |