US2606672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blast furnace
Assignee: Individual
•
Filing: 1947-07-10
•
Granted: 1952-08-12
•
Expires: 1967-07-10
Abstract
No abstract record available.
Inventors
- 👤 Julian M Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:01
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/007; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US708116A
Cited
GB287865A
Cited
US2215872A
Cited
DE686112C
Cited
US2200488A
Cited
US2411487A
Cited
US2408945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |