Patent US2796839A successfully refreshed from Google Patents.
US2796839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail coupling
Assignee: Cleveland Crane and Engineering Co
•
Filing: 1954-07-15
•
Granted: 1957-06-25
•
Expires: 1974-07-15
Abstract
No abstract record available.
Inventors
- 👤 Alphonse F Anjeskey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:28
CPC Classifications
E; E01; E01B; E01B25/00; E01B25/22; E01B25/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US432101A
Cited
US1131889A
Cited
US1906683A
Cited
US2076106A
Cited
US2442774A
Cited
US2443387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |