US220322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in bell-joints for coupling metal pipes
Assignee: —
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Filing: —
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Granted: 1879-10-07
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Expires: 1896-10-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:07
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49826; Y10T29/49863; Y10T29/49865
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) | 1882-10-06 | 1883-04-07 | 1883-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-10-06 | 1887-04-07 | 1887-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-10-06 | 1891-04-07 | 1891-10-07 | $7700.00 | Window Closed / Lapsed |