Patent US20040186479A1 successfully refreshed from Google Patents.
US2908037A
Expired / Lapsed
US
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Making multiple tube structures by extrusion
Assignee: MULTIPLE EXTRUSIONS Inc
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Filing: 1954-03-24
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Granted: 1959-10-13
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Expires: 1974-03-24
Abstract
No abstract record available.
Inventors
- 👤 Robert J Harkenrider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:57
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/11; B29L; B29L2031/00; B29L2031/60
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |