Patent US2956393A successfully refreshed from Google Patents.
US2956393A
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US
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Method for crimping swellable filamentary materials
Assignee: Individual
•
Filing: 1954-09-16
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Granted: 1960-10-18
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Expires: 1974-09-16
Abstract
No abstract record available.
Inventors
- 👤 Ubbelohde Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:03
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/026; D02G1/0286
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2111209A
Cited
US2352861A
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US2313104A
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US2477909A
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US2475922A
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US2552210A
Cited
US2775860A
Cited
US2803108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |