Patent US2621289A successfully refreshed from Google Patents.
US2770033A
Expired / Lapsed
US
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Method of soldering a thin beryllium member to a metal part
Assignee: Machlett Laboratories Inc
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Filing: 1951-06-14
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Granted: 1956-11-13
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Expires: 1971-06-14
Abstract
No abstract record available.
Inventors
- 👤 William A Zarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:41
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/18
Claims Analysis
Total Claims: 0
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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) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |