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US3532579A
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Apparatus for continuously forming a tubular member of resin-impregnated fibers
Assignee: HAVENS INTERN
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Filing: 1965-04-19
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Granted: 1970-10-06
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Expires: 1985-04-19
Abstract
No abstract record available.
Inventors
- 👤 Glenn G Havens
- 👤 William D Hibbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:08
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/80; B29C53/8008; B29C53/8016; B29C53/56; B29C53/58; B29C53/60; B29C53/607
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3216876A
Cited
US3332815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |