Patent US3903894A successfully refreshed from Google Patents.
US3534541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crimped yarn and process of making same
Assignee: EIDP Inc
•
Filing: 1969-07-15
•
Granted: 1970-10-20
•
Expires: 1989-07-15
Abstract
No abstract record available.
Inventors
- 👤 David Holmes Edison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0286
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2512606A
Cited
US2803109A
Cited
US3079745A
Cited
US3249591A
Cited
GB1091007A
Cited
US3404710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |