Patent US3187607A successfully refreshed from Google Patents.
US3187607A
Expired / Lapsed
US
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Spinneret production
Assignee: EIDP Inc
•
Filing: 1962-07-24
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Granted: 1965-06-08
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Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Krummeck Ludwig August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:06
CPC Classifications
B; B21; B21D; B21D31/00; B21D31/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1476246A
Cited
US1604216A
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US1654936A
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US1903734A
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US2148221A
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US2605836A
Cited
US3017789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |