US2648759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming parts from brittle metal strip
Assignee: AT&T Inc
•
Filing: 1950-05-11
•
Granted: 1953-08-11
•
Expires: 1970-05-11
Abstract
No abstract record available.
Inventors
- 👤 George R Machian
- 👤 Lee R Mcclary
- 👤 Alfred J Prickett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:53
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/06; B21D24/00; B21D24/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2335495A
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US2372516A
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US2367715A
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US2452197A
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US2449365A
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US2461323A
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US2554076A
Cited
GB620432A
Cited
US2591339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |