US2389133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reduction of metallic material
Assignee: Brassert & Co
•
Filing: 1943-04-06
•
Granted: 1945-11-20
•
Expires: 1963-04-06
Abstract
No abstract record available.
Inventors
- 👤 Herman A Brassert
- 👤 Charles F Ramseyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:37
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/06; C21B13/10; C21B13/105; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
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) | 1948-11-19 | 1949-05-21 | 1949-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-11-19 | 1953-05-21 | 1953-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-11-19 | 1957-05-21 | 1957-11-20 | $7700.00 | Window Closed / Lapsed |