US1472131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of obtaining purified iron from its ores
Assignee: Individual
•
Filing: 1919-08-21
•
Granted: 1923-10-30
•
Expires: 1939-08-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Moxham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:34
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C21; C21B; C21B13/00; C22B1/14
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) | 1926-10-29 | 1927-04-30 | 1927-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-10-29 | 1931-04-30 | 1931-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-10-29 | 1935-04-30 | 1935-10-30 | $7700.00 | Window Closed / Lapsed |