US2926962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic and gravity load discharging hopper car
Assignee: Enterprise Railway Equipment Co
•
Filing: 1958-08-04
•
Granted: 1960-03-01
•
Expires: 1978-08-04
Abstract
No abstract record available.
Inventors
- 👤 George B Dorey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:34
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1272515A
Cited
US2112698A
Cited
US2190727A
Cited
US2378553A
Cited
US2418302A
Cited
US2502741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |