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US2657431A
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US
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Method of making plastic articles
Assignee: EXTRUDED PLASTICS Inc
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Filing: 1951-02-08
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Granted: 1953-11-03
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Expires: 1971-02-08
Abstract
No abstract record available.
Inventors
- 👤 Charles E Slaughter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:42
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/58; B29C48/00; B29C48/03; B29C48/09; B29C48/10; B29C48/25; B29C48/88; B29C48/90; B29C48/901; B29C48/902; B29C48/908; B29C49/02; B29C49/04; B29C49/28; B29C49/30; B29C49/36; B29C49/56; B29C49/5601; B29C49/5602; B29D; B29D23/00; B29D23/20; B29C2049/5806; B29C2049/582; B29C2049/5824; B29C48/885; B29C48/911; B29C48/9115; B29C48/912; B29L; B29L2023/00; B29L2023/20; B29L2031/00; B29L2031/772; Y; Y10; Y10S; Y10S264/00; Y10S264/33; Y10S264/41; Y10S264/61
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |