US2661963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion joint
Assignee: Standard Oil Development Co
•
Filing: 1950-02-07
•
Granted: 1953-12-08
•
Expires: 1970-02-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert F Brown
- 👤 Robert H Maass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/03
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) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |