US2472927A
Expired / Lapsed
US
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Testing device for filamentary material
Assignee: Celanese Corp
•
Filing: 1944-10-10
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Granted: 1949-06-14
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Expires: 1964-10-10
Abstract
No abstract record available.
Inventors
- 👤 Taylor David
- 👤 Ward Ernest Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:28
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/08; G01N2203/00; G01N2203/02; G01N2203/026; G01N2203/0262; G01N2203/0278; G01N2203/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |