US2809703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track frame suspension for endless tread vehicle
Assignee: American Zinc Lead and Smelting Co
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Filing: 1955-01-17
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Granted: 1957-10-15
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Expires: 1975-01-17
Abstract
No abstract record available.
Inventors
- 👤 Dale I Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:56
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/084; B62D55/0842
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) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |