US2452080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously extruding vinylidene chloride polymer tubes and stretching the same
Assignee: Dow Chemical Co
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Filing: 1947-01-13
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Granted: 1948-10-26
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Expires: 1967-01-13
Abstract
No abstract record available.
Inventors
- 👤 Wilbur T Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:50
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/14; B29C37/00; B29C37/0067; B29C48/00; B29C48/001; B29C48/0018; B29C48/0019; B29C48/03; B29C48/07; B29C48/08; B29C48/09; B29C48/10; Y; Y10; Y10S; Y10S383/00; Y10S383/908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |