US2537637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway vehicle suspension
Assignee: Bridgestone Firestone Inc
•
Filing: 1946-12-06
•
Granted: 1951-01-09
•
Expires: 1966-12-06
Abstract
No abstract record available.
Inventors
- 👤 Jr James E Candlin
- 👤 Roy W Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:16
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/04; B61F5/10; B61F5/26; B61F5/30; B61F5/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1130656A
Cited
GB307154A
Cited
US2021797A
Cited
US2129910A
Cited
US2180860A
Cited
US2226605A
Cited
US2284253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |