US2497480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air directing means for gun type oil burners
Assignee: SILENT FLAME Manufacturing CO Inc
•
Filing: 1947-07-01
•
Granted: 1950-02-14
•
Expires: 1967-07-01
Abstract
No abstract record available.
Inventors
- 👤 Walshin Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:42
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/001; F23D11/36; F23D11/40; F23D11/408
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1136849A
Cited
US1685108A
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US1640728A
Cited
US1656711A
Cited
AU616027A
Cited
US1735463A
Cited
CH178351A
Cited
US2065042A
Cited
US2066806A
Cited
US2191272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |