US2581031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for the homogenization of plastic masses
Assignee: BATA NARODNI PODNIK
•
Filing: 1947-12-11
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Granted: 1952-01-01
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Expires: 1967-12-11
Abstract
No abstract record available.
Inventors
- 👤 Kruzik Arnost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:19
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/401; B29B7/74; B29B7/7476; B29B7/7495; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/78; B29C48/80; B29C48/83; B29C48/834; B29C48/84; B29C48/85; B29C48/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US443589A
Cited
US481882A
Cited
DE409577C
Cited
US1156096A
Cited
US1825475A
Cited
US1935050A
Cited
US2378539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |