US2939721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring suspension of vehicle body frame
Assignee: Individual
•
Filing: 1957-05-31
•
Granted: 1960-06-07
•
Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Smith Alexander
- 👤 Jr Burton D Baggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:42
CPC Classifications
B; B62; B62D; B62D61/00; B62D61/06; B62D61/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US860251A
Cited
US1205526A
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US1564740A
Cited
US2306042A
Cited
US2450566A
Cited
US2613753A
Cited
US2468801A
Cited
US2618396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |