US2925858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shroud for fuel burners
Assignee: Zinklahoma Inc
•
Filing: 1957-01-14
•
Granted: 1960-02-23
•
Expires: 1977-01-14
Abstract
No abstract record available.
Inventors
- 👤 Robert D Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:29
CPC Classifications
F; F23; F23C; F23C9/00; F23C9/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1699732A
Cited
US2044511A
Cited
US2207010A
Cited
US2275555A
Cited
US2220572A
Cited
GB551568A
Cited
US2424765A
Cited
US2532740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |