US3216876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously making fiber reinforced laminated pipe
Assignee: Polystructures Inc
•
Filing: 1962-02-06
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Granted: 1965-11-09
•
Expires: 1982-02-06
Abstract
No abstract record available.
Inventors
- 👤 James G Tyhurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:50
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B23; B23K; B23K7/00; B23K7/06; F; F16; F16C; F16C13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1932942A
Cited
US2723705A
Cited
US2760549A
Cited
US3068934A
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US2906317A
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US3033729A
Cited
US3068133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |