US2764779A
Expired / Lapsed
US
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Methods and apparatus for feeding continuous-operation mixers for the ingredients of plastic base (e. g. rubber base) compositions
Assignee: Pirelli and C SpA
•
Filing: 1951-04-24
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Granted: 1956-10-02
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Expires: 1971-04-24
Abstract
No abstract record available.
Inventors
- 👤 Zona Vittorio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:26
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/71; B01F35/717; B01F35/7173; B01F35/71731; B29; B29B; B29B7/00; B29B7/74; B29B7/7476; B29B7/7495; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/25; B29C48/285; B29C48/288; B29C48/2888; B29C48/29; Y; Y10; Y10S; Y10S526/00; Y10S526/917
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |