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US2762330A
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Apparatus for treating filamentary material
Assignee: Celanese Corp
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Filing: 1953-01-26
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Granted: 1956-09-11
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Expires: 1973-01-26
Abstract
No abstract record available.
Inventors
- 👤 Whitehead William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:41
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; B; B65; B65H; B65H71/00; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US296645A
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US388078A
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US752458A
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US839567A
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US1684923A
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US2299689A
Cited
US2554723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |