US3532132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of reinforced composite concrete pipe-lines
Assignee: Chem Stress Industries Inc
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Filing: 1968-01-02
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Granted: 1970-10-06
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Expires: 1988-01-02
Abstract
No abstract record available.
Inventors
- 👤 David Rubenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:51
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/12; F16L1/00; F16L1/024; F16L1/028; F16L1/038; F16L55/00; F16L55/16; F16L55/168; F16L55/175; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L58/1009; F16L58/1027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
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 |