Patent US2491994A successfully refreshed from Google Patents.
US2491994A
Expired / Lapsed
US
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Spring suspension for tandem wheeled vehicles
Assignee: Individual
•
Filing: 1946-03-11
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Granted: 1949-12-20
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Expires: 1966-03-11
Abstract
No abstract record available.
Inventors
- 👤 Lloyd A Mcfarlane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:58
CPC Classifications
B; B60; B60G; B60G5/00; B60G5/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1310395A
Cited
GB190605983A
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US1126326A
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US1248027A
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US1835112A
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GB304886A
Cited
US2032721A
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US2024148A
Cited
US2159203A
Cited
US2352301A
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US2403833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |