US2549347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous fuel burner and flame spreader
Assignee: Individual
•
Filing: 1945-12-04
•
Granted: 1951-04-17
•
Expires: 1965-12-04
Abstract
No abstract record available.
Inventors
- 👤 John E Van Tuyl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:42
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/84
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
NL41435C
Cited
US547473A
Cited
US1160246A
Cited
US1498342A
Cited
US1872930A
Cited
US1851745A
Cited
US2123204A
Cited
US2117944A
Cited
US2183836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |