US2623579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internally fired gas burner
Assignee: Individual
•
Filing: 1947-11-05
•
Granted: 1952-12-30
•
Expires: 1967-11-05
Abstract
No abstract record available.
Inventors
- 👤 Furkert Annette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:57
CPC Classifications
F; F23; F23D; F23D14/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1702642A
Cited
US1902541A
Cited
US945967A
Cited
DE479086C
Cited
US1921152A
Cited
FR733806A
Cited
GB484187A
Cited
US2367119A
Cited
US2385854A
Cited
US2398398A
Cited
US2427545A
Cited
US2489244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |