US3671175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace log burner
Assignee: Individual
•
Filing: 1970-10-26
•
Granted: 1972-06-20
•
Expires: 1990-10-26
Abstract
Abstract AN ELONGATED TROUGH-LIKE BODY IS CENTRALLY CONNECTED WITH A GAS SUPPLY PIPE IN A FIREPLACE AREA. A MANDREL, SECURED TO THE INNER SURFACE OF THE TROUGH IN COMMUNICATION WITH THE GAS SUPPLY, SUPPORTS A TUBUULAR GAS DISTRIBUTOR IN THE BOTTOM PORTION OF THE TROUGH AND LONGITUDINALLY COEXTENSIVE THEREWITH. THE TROUGH IS FILLED WITH GRANULAR MATERIAL FOR FURTHER DISTRIBUTING AND BURNING THE GAS.
Inventors
- 👤 Billy G Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:49
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/002; F24C3/006; F23; F23D; F23D14/00; F23D14/02; F23D14/04; F23D14/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |