Patent US2557649A successfully refreshed from Google Patents.
US2557649A
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US
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Machine for kneading and conveying plastic substances
Assignee: Individual
•
Filing: 1947-05-17
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Granted: 1951-06-19
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Expires: 1967-05-17
Abstract
No abstract record available.
Inventors
- 👤 Gerstenberg Aage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:59
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/42; A; A01; A01J; A01J17/00; B01; B01F; B01F35/00; B01F35/90; B01F35/95; B01F27/00; B01F27/05; B01F27/11; B01F27/114
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2108977A
Cited
US2328395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |