Patent US3486968A successfully refreshed from Google Patents.
US2474039A
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Method of forming composite metal having a nickel-plated beryllium-copper base and gold or silver bonded thereto by a copper-plated iron sheet
Assignee: Metals and Controls Corp
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Filing: 1946-05-01
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Granted: 1949-06-21
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Expires: 1966-05-01
Abstract
No abstract record available.
Inventors
- 👤 Ermand H Davignon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:46
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/018; B23; B23K; B23K20/00; B23K20/22; B23K20/233; B23K20/2333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1896411A
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US2024150A
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US2269523A
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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) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |