US2593265A
Expired / Lapsed
US
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Apparatus for treating plastic materials
Assignee: Farrel Birmingham Co Inc
•
Filing: 1950-10-11
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Granted: 1952-04-15
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Expires: 1970-10-11
Abstract
No abstract record available.
Inventors
- 👤 Donald C Chase
- 👤 John M Joyner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:31
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/875; B29C48/03; B29C48/05; B29C48/06; B29C48/36; B29C48/395; B29C48/80; B29C48/84; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92009; B29C2948/92019; B29C2948/92114; B29C2948/92133; B29C2948/92209; B29C2948/92819; B29C2948/92857; B29C2948/92876; B29C2948/92895; B29C2948/92904; B29C48/50; B29C48/505; B29C48/51; B29C48/515; B29C48/845; B29C48/85
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1849291A
Cited
US1935050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |