Patent US2507980A successfully refreshed from Google Patents.
US2507980A
Expired / Lapsed
US
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Independent wheel suspension
Assignee: Individual
•
Filing: 1947-08-18
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Granted: 1950-05-16
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Expires: 1967-08-18
Abstract
No abstract record available.
Inventors
- 👤 Walter H Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:07
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/14; B60G17/00; B60G17/02; B60G17/021; B60G2204/00; B60G2204/10; B60G2204/12; B60G2204/124; B60G2204/1244; B60G2206/00; B60G2206/01; B60G2206/10
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) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |