US2093406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripping or transferring platinum metals
Assignee: Huntington Alloys Corp
•
Filing: 1934-05-11
•
Granted: 1937-09-21
•
Expires: 1954-05-11
Abstract
No abstract record available.
Inventors
- 👤 Atkinson Ralph Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:15
CPC Classifications
C; C22; C22B; C22B11/00; C22B11/02; C22B11/021; C25; C25F; C25F5/00; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1940-09-20 | 1941-03-22 | 1941-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-09-20 | 1945-03-22 | 1945-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-09-20 | 1949-03-22 | 1949-09-21 | $7700.00 | Window Closed / Lapsed |