Patent US2649213A successfully refreshed from Google Patents.
US2649213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction shock absorbing mechanism for railway draft riggings
Assignee: W H MINER Inc
•
Filing: 1949-04-30
•
Granted: 1953-08-18
•
Expires: 1969-04-30
Abstract
No abstract record available.
Inventors
- 👤 William E Withall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:44
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04; B61G9/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US113664A
Cited
US775216A
Cited
US754671A
Cited
US1251089A
Cited
US1251083A
Cited
GB363886A
Cited
FR727324A
Cited
US2321845A
Cited
US2463373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |