Patent US3984307A successfully refreshed from Google Patents.
Patent US2329256A successfully refreshed from Google Patents.
US2329256A
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Material forming apparatus
Assignee: AT&T Inc
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Filing: 1942-01-20
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Granted: 1943-09-14
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Expires: 1962-01-20
Abstract
No abstract record available.
Inventors
- 👤 Edelman Beril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:58
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/06; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/478
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-09-13 | 1947-03-15 | 1947-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-09-13 | 1951-03-15 | 1951-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-09-13 | 1955-03-15 | 1955-09-14 | $7700.00 | Window Closed / Lapsed |