Patent US2974258A successfully refreshed from Google Patents.
US2974258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic packaging
Assignee: International Business Machines Corp
•
Filing: 1956-12-19
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Granted: 1961-03-07
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Expires: 1976-12-19
Abstract
No abstract record available.
Inventors
- 👤 Albert N Garthwaite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:11
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23921E
Cited
US2754454A
Cited
GB637596A
Cited
US2533483A
Cited
GB664024A
Cited
US2764713A
Cited
US2816252A
Cited
GB755974A
Cited
US2885602A
Cited
US2885603A
Cited
US2918640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |