US3381336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt spinning extrusion head system
Assignee: Individual
•
Filing: 1966-06-20
•
Granted: 1968-05-07
•
Expires: 1986-06-20
Abstract
No abstract record available.
Inventors
- 👤 Stanley C Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:26
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; B; B29; B29C; B29C48/00; B29C48/03; B29C48/05; B29C48/25; B29C48/30; B29C48/345; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734224A
Cited
US1310509A
Cited
US1788660A
Cited
DE493608C
Cited
US2541201A
Cited
US3006026A
Cited
US3317958A
Cited
US3308504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |