US2851093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple fuel burner
Assignee: Zinklahoma Inc
•
Filing: 1956-12-26
•
Granted: 1958-09-09
•
Expires: 1976-12-26
Abstract
No abstract record available.
Inventors
- 👤 Jr John S Zink
- 👤 Robert P Duncan
- 👤 Orville P Edwards
- 👤 Robert D Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:39
CPC Classifications
F; F23; F23D; F23D17/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1687390A
Cited
US1797570A
Cited
US1912730A
Cited
US2124175A
Cited
US2220572A
Cited
US2661056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |