US2734560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner and combustion system
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:34
CPC Classifications
F; F23; F23C; F23C99/00; F23D; F23D11/00; F23C2700/00; F23C2700/02; F23C2700/023
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1336261A
Cited
US1410708A
Cited
US1420441A
Cited
DE376570C
Cited
GB267857A
Cited
US2066806A
Cited
US2618928A
Cited
US2517015A
Cited
US2603064A
Cited
US2541171A
Cited
US2555965A
Cited
US2602292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |