US2748401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruded flexible and hollow articles and method of making same
Assignee: Hedwin Corp
•
Filing: 1952-06-30
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Granted: 1956-06-05
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Expires: 1972-06-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Winstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:33
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/18; A43B13/20; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/11; B29C48/12; B63; B63C; B63C9/00; B63C9/08; B29L; B29L2031/00; B29L2031/60; Y; Y10; Y10S; Y10S29/00; Y10S29/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR955651A
Cited
US1671642A
Cited
US1744130A
Cited
US2064128A
Cited
US2169025A
Cited
US2262086A
Cited
US2501833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |