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US3495719A
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Hydraulic draft unit for use on a railway vehicle
Assignee: Halliburton Co
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Filing: 1968-04-02
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Granted: 1970-02-17
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Expires: 1988-04-02
Abstract
No abstract record available.
Inventors
- 👤 James M Peppers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:19
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04; B61G9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2944681A
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US3186562A
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US3173552A
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US3233747A
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US3301410A
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US3451561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |