US2530262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion apparatus
Assignee: AT&T Inc
•
Filing: 1947-12-15
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Granted: 1950-11-14
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Expires: 1967-12-15
Abstract
No abstract record available.
Inventors
- 👤 Oscar G Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:01
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/221; B29; B29C; B29C48/00; B29C48/25; B29C48/256; B29C48/2562; B29C48/30; B29C48/32; B29C48/34; B29C48/36; B29C48/50; B29C48/03
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) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |