US3551271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven fabrics containing heterofilaments
Assignee: British Nylon Spinners Ltd
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Filing: 1969-07-15
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Granted: 1970-12-29
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Expires: 1989-07-15
Abstract
No abstract record available.
Inventors
- 👤 Gwilym G Thomas
- 👤 Christopher R Sissons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:42
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/542; D04H1/549; A; A47; A47L; A47L25/00; A47L25/02; D01; D01F; D01F8/00; D01F8/04; D01F8/10; D04H3/00; D04H3/005; D04H3/009; D04H3/08; D04H3/14; Y; Y10; Y10T; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/627; Y10T442/629
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |