Patent US3481643A successfully refreshed from Google Patents.
US3481643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle chassis construction
Assignee: ELKHART BRIDGE AND IRON CO Inc
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Filing: 1967-08-23
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Granted: 1969-12-02
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Expires: 1987-08-23
Abstract
No abstract record available.
Inventors
- 👤 William J M Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:51
CPC Classifications
B; B62; B62D; B62D21/00; B62D21/10; B62D25/00; B62D25/20; B62D25/2054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1191863A
Cited
US1605513A
Cited
GB738287A
Cited
US2836267A
Cited
US3217845A
Cited
US3080267A
Cited
US3163435A
Cited
US3282603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |