US2832613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autogenous welded laminated expansion joint for conduits
Assignee: Flexonics Corp
•
Filing: 1954-06-10
•
Granted: 1958-04-29
•
Expires: 1974-06-10
Abstract
No abstract record available.
Inventors
- 👤 John F P Farrar
- 👤 Fentress David Wendell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:16
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/025; F16L51/027; B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/20; B21C37/205
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |