Patent US2451986A successfully refreshed from Google Patents.
US2451986A
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Thermoplastic extrusion method
Assignee: EXTRUDED PLASTICS Inc
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Filing: 1943-05-25
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Granted: 1948-10-19
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Expires: 1963-05-25
Abstract
No abstract record available.
Inventors
- 👤 Charles E Slaughter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:33
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/90; B29C48/908; B29C48/03; B29C48/05; B29C48/09; B29C48/901; B29C48/903; B29C48/911; B29C48/919; B29C48/885; B29C48/907; B29C48/9115; B29C48/912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1802605A
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US1740029A
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US1952038A
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US1956564A
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US2287825A
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US2294555A
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US2308638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |