US2369233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing metal
Assignee: MW Kellogg Co
•
Filing: 1943-01-26
•
Granted: 1945-02-13
•
Expires: 1963-01-26
Abstract
No abstract record available.
Inventors
- 👤 Robert K Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:06
CPC Classifications
B; B22; B22D; B22D23/00; B22D23/06; B22D23/10; B22D27/00; B22D27/02; C; C22; C22B; C22B9/00; C22B9/16; C22B9/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1948-02-13 | 1948-08-14 | 1949-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-13 | 1952-08-14 | 1953-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-13 | 1956-08-14 | 1957-02-13 | $7700.00 | Window Closed / Lapsed |