US2792240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible concrete pipe joint
Assignee: —
•
Filing: 1951-04-27
•
Granted: 1957-05-14
•
Expires: 1971-04-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:39
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/08; F16L9/085; F16L25/00; F16L25/0027; F16L27/00; F16L27/10; F16L27/1017
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1475867A
Cited
US679459A
Cited
US944273A
Cited
US1770180A
Cited
US2009650A
Cited
US2158829A
Cited
GB521016A
Cited
US2359046A
Cited
US2643904A
Cited
US2648551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |