Patent US3467743A successfully refreshed from Google Patents.
US3467743A
Expired / Lapsed
US
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Apparatus for the extrusion of plastics
Assignee: Individual
•
Filing: 1967-01-09
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Granted: 1969-09-16
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Expires: 1987-01-09
Abstract
No abstract record available.
Inventors
- 👤 Kanji Otani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:06
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/375; B29C48/38; B29C48/03
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) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |