Patent US507839A successfully refreshed from Google Patents.
Patent US3494149A successfully refreshed from Google Patents.
US3494149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warp knitting process
Assignee: Celanese Corp
•
Filing: 1966-04-07
•
Granted: 1970-02-10
•
Expires: 1986-04-07
Abstract
No abstract record available.
Inventors
- 👤 John Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:11
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/10; D04B35/00; D04B35/34
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US129319A
Cited
US375728A
Cited
US478975A
Cited
US577702A
Cited
US577865A
Cited
US1026482A
Cited
GB191513635A
Cited
US1509692A
Cited
DE721865C
Cited
AT220276B
Cited
FR1366665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |