US2839783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinnerets for melt-spinning high polymeric substances
Assignee: Akzona Inc
•
Filing: 1950-10-30
•
Granted: 1958-06-24
•
Expires: 1970-10-30
Abstract
No abstract record available.
Inventors
- 👤 Wolf Willem De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:47
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D4/00; D01D4/02; D01D4/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1337258A
Cited
US1604216A
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US1654936A
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US1788660A
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US1967798A
Cited
US1935821A
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US1999072A
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AT139646B
Cited
US2266363A
Cited
US2273638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |