US3419653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of filament twinning in dry spinning
Assignee: EIDP Inc
•
Filing: 1965-01-04
•
Granted: 1968-12-31
•
Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 Briggs Frederick Albert
- 👤 Ketterer Charles Clifford
- 👤 Sherbeck Leander Adair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:53
CPC Classifications
C; C08; C08L; C08L77/00; D; D01; D01D; D01D5/00; D01D5/04; D01F; D01F1/00; D01F1/02; D01F1/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2929804A
Cited
US2951053A
Cited
US2811497A
Cited
US2985545A
Cited
US3039895A
Cited
US3193516A
Cited
GB936880A
Cited
US3253506A
Cited
US3296063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |