US2776008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Punch and die
Assignee: AT&T Inc
•
Filing: 1952-03-08
•
Granted: 1957-01-01
•
Expires: 1972-03-08
Abstract
No abstract record available.
Inventors
- 👤 George W Soderman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:46
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/10; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/2144; Y10T83/215; Y10T83/2155; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/8831
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US418534A
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US828226A
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US1402284A
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US1288054A
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US1533681A
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US1602687A
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US1960881A
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GB488552A
Cited
US2230043A
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US2278288A
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US2324143A
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US2388528A
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US2379003A
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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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |