US3457611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for crimping thermoplastic yarns
Assignee: Hercules LLC
•
Filing: 1967-10-10
•
Granted: 1969-07-29
•
Expires: 1987-10-10
Abstract
No abstract record available.
Inventors
- 👤 Stanley R Nechvatal
- 👤 William N Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:08
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2379824A
Cited
US2634491A
Cited
US3036357A
Cited
US3255508A
Cited
US3055080A
Cited
US3341912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |