Patent US2821959A successfully refreshed from Google Patents.
US2821959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass soldering of electrical assemblies
Assignee: AT&T Inc
•
Filing: 1956-03-29
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Granted: 1958-02-04
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Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Ada L Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:14
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/06; Y; Y10; Y10S; Y10S118/00; Y10S118/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1724179A
Cited
US2733171A
Cited
US1872507A
Cited
US2235978A
Cited
US2279686A
Cited
US2440084A
Cited
US2655066A
Cited
US2708417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |