US2688481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axle suspension
Assignee: American Steel Foundries
•
Filing: 1952-08-22
•
Granted: 1954-09-07
•
Expires: 1972-08-22
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Bergquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:43
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/14; B60G11/15
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US298016A
Cited
US1091884A
Cited
CH116051A
Cited
US1956877A
Cited
US1970823A
Cited
FR772052A
Cited
GB469306A
Cited
US2542261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |