Patent US2519320A successfully refreshed from Google Patents.
US2519320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway car construction
Assignee: Individual
•
Filing: 1948-03-19
•
Granted: 1950-08-15
•
Expires: 1968-03-19
Abstract
No abstract record available.
Inventors
- 👤 Robert A Meldrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:01
CPC Classifications
B; B61; B61F; B61F1/00; B61F1/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US696150A
Cited
US998696A
Cited
US1173118A
Cited
US1640471A
Cited
US2084161A
Cited
US2160477A
Cited
US2143273A
Cited
US2183054A
Cited
US2146221A
Cited
US2299421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |