Patent US2863280A successfully refreshed from Google Patents.
US2863280A
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US
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Method of crimping filaments
Assignee: Individual
•
Filing: 1953-04-16
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Granted: 1958-12-09
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Expires: 1973-04-16
Abstract
No abstract record available.
Inventors
- 👤 Ubbelohde Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:04
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2111209A
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US2111211A
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US2244832A
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US2394165A
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US2463618A
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US2477909A
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US2475922A
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US2463620A
Cited
US2669001A
Cited
US2590374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |