US2988375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor-trailer spring arrangement
Assignee: General Steel Castings Corp
•
Filing: 1958-04-21
•
Granted: 1961-06-13
•
Expires: 1978-04-21
Abstract
No abstract record available.
Inventors
- 👤 Richard L Lich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:12
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/033; B60G11/00; B60G11/32; B60G11/48; B60G11/56; B60G11/58; B60G5/00; B60G5/02; Y; Y10; Y10S; Y10S280/00; Y10S280/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1869285A
Cited
US2361575A
Cited
US2670201A
Cited
US2691420A
Cited
US2743939A
Cited
US2790650A
Cited
FR1153847A
Cited
US2882068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |