US3458615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodynamically centering sheath/core filament spinnerette
Assignee: EIDP Inc
•
Filing: 1967-04-18
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Granted: 1969-07-29
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Expires: 1987-04-18
Abstract
No abstract record available.
Inventors
- 👤 Chester Griswold Bragaw Jr
- 👤 Robert Latham Washburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/34; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/06; B29C48/16; B29C48/25; B29C48/30; B29C48/304; Y; Y10; Y10S; Y10S425/00; Y10S425/217
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3239197A
Cited
US3195865A
Cited
FR1365873A
Cited
US3318987A
Cited
US3315021A
Cited
US3328003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |