Patent US2988151A successfully refreshed from Google Patents.
Patent US3469279A successfully refreshed from Google Patents.
US3469279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinneret for heterofilaments
Assignee: British Nylon Spinners Ltd
•
Filing: 1964-10-15
•
Granted: 1969-09-30
•
Expires: 1984-10-15
Abstract
No abstract record available.
Inventors
- 👤 Alfred William David Hudgell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:27
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/32; Y; Y10; Y10S; Y10S425/00; Y10S425/217
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2386173A
Cited
US2815532A
Cited
US2871511A
Cited
US2971219A
Cited
US3006028A
Cited
US3209402A
Cited
US3295552A
Cited
US3237245A
Cited
US3289249A
Cited
US3224041A
Cited
US3225383A
Cited
US3217734A
Cited
US3318987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |