US3021561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasticizing and injection apparatus for plastic or synthetic materials
Assignee: Reifenhauser KG
•
Filing: 1959-03-04
•
Granted: 1962-02-20
•
Expires: 1979-03-04
Abstract
No abstract record available.
Inventors
- 👤 Reifenhauser Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:54
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C45/48; B29C45/53; B29C45/54; B29C45/541
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR902287A
Cited
US2695422A
Cited
US2668986A
Cited
FR1070500A
Cited
US2680880A
Cited
FR1105967A
Cited
US2944288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |