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Patent US3488412A successfully refreshed from Google Patents.
US3488412A
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Method of purging thermosetting materials from an injection molding machine
Assignee: Eckert and Ziegler GmbH
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Filing: 1967-04-20
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Granted: 1970-01-06
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Expires: 1987-04-20
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Bernd Bielfeldt
- 👤 Horst Hadeball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:01
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/18; B29C45/1816
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2346708A
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US2346228A
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DE830167C
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US2862239A
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US2980493A
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US3146287A
Cited
US3193877A
Cited
US3233288A
Cited
US3384690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |