US2656566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for extruding plastic material
Assignee: AT&T Inc
•
Filing: 1948-12-04
•
Granted: 1953-10-27
•
Expires: 1968-12-04
Abstract
No abstract record available.
Inventors
- 👤 George E Berggren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:28
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/06; B29C48/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US466910A
Cited
US1633620A
Cited
US1812686A
Cited
US2332538A
Cited
US2401551A
Cited
US2438974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |