US2488129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for extrusion of plastic materials
Assignee: ATTAPULGUS CLAY Co
•
Filing: 1943-07-01
•
Granted: 1949-11-15
•
Expires: 1963-07-01
Abstract
No abstract record available.
Inventors
- 👤 Jr William A La Lande
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:14
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/24; B29; B29C; B29C48/00; B29C48/03; Y; Y10; Y10S; Y10S425/00; Y10S425/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US855379A
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US1595470A
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US2032624A
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US2269436A
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US2344959A
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US2336734A
Cited
US2391050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |