US2373244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blast furnace process
Assignee: Individual
•
Filing: 1943-08-19
•
Granted: 1945-04-10
•
Expires: 1963-08-19
Abstract
No abstract record available.
Inventors
- 👤 Holz Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:27
CPC Classifications
C; C21; C21B; C21B5/00; C21B5/02; C21B5/008; C21B7/00; C21B7/002; C21B2100/00; C21B2100/40; C21B2100/44; Y; Y10; Y10S; Y10S75/00; Y10S75/961
Claims Analysis
Total Claims: 0
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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) | 1948-04-09 | 1948-10-09 | 1949-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-09 | 1952-10-09 | 1953-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-09 | 1956-10-09 | 1957-04-10 | $7700.00 | Window Closed / Lapsed |