Patent US3685020A successfully refreshed from Google Patents.
US2680880A
Expired / Lapsed
US
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Machine for combined extruding and injection molding
Assignee: Individual
•
Filing: 1953-02-12
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Granted: 1954-06-15
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Expires: 1973-02-12
Abstract
No abstract record available.
Inventors
- 👤 Corbett Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:40
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/53; B29C45/54; B29C45/541; B29C48/00; B29C48/03; B29C48/25; B29C48/36; B29C48/365; B29C48/37; B29C48/375; B29C48/387; B29C48/388; B29C48/395; B29C48/50; B29C48/505; B29C48/51; B29C2045/465; Y; Y10; Y10S; Y10S100/00; Y10S100/903; Y10S100/904
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) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |