US2898131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible pipe-joint
Assignee: James B Clow and Sons Inc
•
Filing: 1958-02-04
•
Granted: 1959-08-04
•
Expires: 1978-02-04
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Kurtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:46
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/10; F16L27/1017; F16L21/00; F16L21/02; F16L21/03; F16L27/113; F16L27/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1924020A
Cited
US2116705A
Cited
FR806525A
Cited
US2174105A
Cited
US2272811A
Cited
US2245154A
Cited
US2505863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |