US2747658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual band type gas burner with cross-over flame connection
Assignee: ENSIGN RIBBON BURNERS Inc
•
Filing: 1954-09-14
•
Granted: 1956-05-29
•
Expires: 1974-09-14
Abstract
No abstract record available.
Inventors
- 👤 Wildermann Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:03
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/58; F23D14/583; F23D14/586
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |