US3458065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hopper car shaker
Assignee: JAMES R DOUGLASS
•
Filing: 1967-01-24
•
Granted: 1969-07-29
•
Expires: 1987-01-24
Abstract
No abstract record available.
Inventors
- 👤 James R Douglass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:27
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/58; B60D; B60D1/00; B60D1/14; B60D1/18; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18344
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |