US2574648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail connector
Assignee: ConocoPhillips Co
•
Filing: 1946-05-01
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Granted: 1951-11-13
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Expires: 1966-05-01
Abstract
No abstract record available.
Inventors
- 👤 Joe H Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:26
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/18; F16B7/182; Y; Y10; Y10T; Y10T403/00; Y10T403/36; Y10T403/364; Y10T403/368; Y10T403/57; Y10T403/5733
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) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |