US2430306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precipitation hardenable copper, nickel, tantalum (or columbium) alloys
Assignee: American Brass Co
•
Filing: 1941-04-23
•
Granted: 1947-11-04
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Expires: 1961-04-23
Abstract
No abstract record available.
Inventors
- 👤 Smith Cyril Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:10
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1556953A
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US1990168A
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GB295971A
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DE627291C
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US1992325A
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US1992118A
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US2281691A
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US2012450A
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US2137281A
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US2153978A
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GB521927A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |