Patent US3437725A successfully refreshed from Google Patents.
US3437725A
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US
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Melt spinning apparatus and method
Assignee: EIDP Inc
•
Filing: 1967-08-29
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Granted: 1969-04-08
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Expires: 1987-08-29
Abstract
No abstract record available.
Inventors
- 👤 Norwin Caley Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:45
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/25; B29C48/30; B29C48/345; D01D4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1984472A
Cited
US3360597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |