US1944770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosion or bleeder valve for blast furnaces
Assignee: Individual
•
Filing: 1933-05-15
•
Granted: 1934-01-23
•
Expires: 1953-05-15
Abstract
No abstract record available.
Inventors
- 👤 Svorcina Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:42
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/002; C21B7/005; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6154; Y10T137/7722; Y10T137/7738; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/7919
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) | 1937-01-22 | 1937-07-24 | 1938-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-01-22 | 1941-07-24 | 1942-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-01-22 | 1945-07-24 | 1946-01-23 | $7700.00 | Window Closed / Lapsed |