Patent US3439631A successfully refreshed from Google Patents.
US3439631A
Expired / Lapsed
US
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Hydraulically dampened cross-equalized truck
Assignee: Amsted Industries Inc
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Filing: 1965-02-24
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Granted: 1969-04-22
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Expires: 1985-02-24
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey W Cope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:43
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/22; B61F5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3166340A
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US3208402A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |