Patent US2643006A successfully refreshed from Google Patents.
US3547731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable joint wrapper for pipelines
Assignee: Stuart Steel Protection Corp
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Filing: 1968-02-12
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Granted: 1970-12-15
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Expires: 1988-02-12
Abstract
No abstract record available.
Inventors
- 👤 Linden Stuart Jr
- 👤 Frank F Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:45
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/16; B; B29; B29C; B29C63/00; B29C63/0065; B29C63/02; B29C63/024; B29C63/04; B29C63/06; F16L58/18; F16L58/181; F16C; F16C13/00; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1348
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |