US2796128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of detecting a plugged condition of a die
Assignee: AT&T Inc
•
Filing: 1954-09-07
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Granted: 1957-06-18
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Expires: 1974-09-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Danek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:47
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/34; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0448; Y10T83/0453
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |