US3442223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for loading or unloading vehicle carrying railway cars
Assignee: JOSEPH E GRAHAM
•
Filing: 1966-08-08
•
Granted: 1969-05-06
•
Expires: 1986-08-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:30
CPC Classifications
B; B61; B61J; B61J1/00; B61J1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1366292A
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US1489404A
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US1971339A
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US2190708A
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US2911925A
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US2896548A
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US2976817A
Cited
US2920580A
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US3171621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |