Patent US2738641A successfully refreshed from Google Patents.
US2738641A
Expired / Lapsed
US
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Apparatus for forming spirally wrapped plastic strip fiber
Assignee: Individual
•
Filing: 1953-03-17
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Granted: 1956-03-20
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Expires: 1973-03-17
Abstract
No abstract record available.
Inventors
- 👤 Slavek Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:02
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US621735A
Cited
US1204342A
Cited
US1585615A
Cited
US1764524A
Cited
US1736221A
Cited
US2414378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |