Patent US3526692A successfully refreshed from Google Patents.
US3526692A
Expired / Lapsed
US
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Manufacture of wire reinforced plastic pipe
Assignee: Individual
•
Filing: 1968-05-24
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Granted: 1970-09-01
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Expires: 1988-05-24
Abstract
No abstract record available.
Inventors
- 👤 Yasuyoshi Onaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:02
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/001; B29C48/0013; B29C48/0015; B29C48/0016; B29C48/03; B29C48/09; B29C48/12; B29C48/13; B29C48/15; B29C48/151; B29C48/152; B29C48/153; B29C48/16; B29C48/18; B29C48/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1111418A
Cited
US2513106A
Cited
US2491152A
Cited
US2620514A
Cited
US2730762A
Cited
US3375550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |