Patent US2453420A successfully refreshed from Google Patents.
Patent US3447308A successfully refreshed from Google Patents.
US3447308A
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Multifilament yarns for reinforcing elastic articles
Assignee: Akzona Inc
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Filing: 1967-08-28
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Granted: 1969-06-03
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Expires: 1987-08-28
Abstract
No abstract record available.
Inventors
- 👤 Wilhelmus J Fontijn
- 👤 Korstiaan J M Van Drunen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:15
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/14; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/36; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10S57/00; Y10S57/902; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10855; Y10T152/10873; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2933; Y10T428/298; Y10T442/00; Y10T442/30; Y10T442/3065; Y10T442/313
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2610927A
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US2755214A
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US3382305A
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US2955961A
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US3029590A
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US3222238A
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US3369057A
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US3387996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |