US2820374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making spinnerets for melt spinning
Assignee: Akzona Inc
•
Filing: 1952-07-10
•
Granted: 1958-01-21
•
Expires: 1972-07-10
Abstract
No abstract record available.
Inventors
- 👤 Wolf Willem De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:24
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)
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US2376742A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |