Patent US2354424A successfully refreshed from Google Patents.
US1422019A
Expired / Lapsed
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Alloy of refractory metals and process of forming same
Assignee: Individual
•
Filing: 1913-01-17
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Granted: 1922-07-04
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Expires: 1933-01-17
Abstract
No abstract record available.
Inventors
- 👤 Yunck John Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:29
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/04
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) | 1925-07-03 | 1926-01-02 | 1926-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-07-03 | 1930-01-02 | 1930-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-07-03 | 1934-01-02 | 1934-07-04 | $7700.00 | Window Closed / Lapsed |