US2853811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad spreaders
Assignee: O F JORDAN CO
•
Filing: 1954-09-30
•
Granted: 1958-09-30
•
Expires: 1974-09-30
Abstract
No abstract record available.
Inventors
- 👤 Calvin W Shipley
- 👤 Stuart D Mclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:03
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/02; E01B27/023; E01B27/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1353927A
Cited
US1718550A
Cited
US1742326A
Cited
US1818750A
Cited
US2299451A
Cited
US2491797A
Cited
US2594727A
Cited
US2777220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |