US3524221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for monitoring polymer viscosity in a spinning unit
Assignee: EIDP Inc
•
Filing: 1967-09-13
•
Granted: 1970-08-18
•
Expires: 1987-09-13
Abstract
No abstract record available.
Inventors
- 👤 Thurman Ralston Jones Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:10
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; D01D1/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB565282A
Cited
US3032822A
Cited
US3148231A
Cited
US3110547A
Cited
US3354501A
Cited
US3354504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |