US2902275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air spring
Assignee: Rockwell-Standard Corp
•
Filing: 1956-07-10
•
Granted: 1959-09-01
•
Expires: 1976-07-10
Abstract
No abstract record available.
Inventors
- 👤 Milton B Hammond
- 👤 Louis J Hrusovsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:29
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/32; B60G11/34; B60G11/46; B60G11/465
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1062320A
Cited
US1058412A
Cited
GB231960A
Cited
DE595490C
Cited
US1991184A
Cited
US1987411A
Cited
GB508623A
Cited
US2180492A
Cited
US2361575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |