Patent US3499387A successfully refreshed from Google Patents.
US3499387A
Expired / Lapsed
US
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Plastic injection machines
Assignee: Individual
•
Filing: 1968-05-02
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Granted: 1970-03-10
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Expires: 1988-05-02
Abstract
No abstract record available.
Inventors
- 👤 Richard Zippel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:40
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/71; B01F35/717; B01F35/7174; B01F35/80; B01F35/88; B01F35/882; B01F35/8822; B29; B29B; B29B7/00; B29B7/30; B29B7/58; B29B7/60; B29B7/603; B29C; B29C44/00; B29C44/34; B29C44/3442; B29C45/00; B29C45/17; B29C45/46; B29C45/461
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1036587A
Cited
US1072718A
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US1274884A
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US1817052A
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US2752989A
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US2910875A
Cited
US2925780A
Cited
US3272133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |