US2453291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-rotating kingpin thrust bearing
Assignee: Individual
•
Filing: 1947-09-26
•
Granted: 1948-11-09
•
Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
- 👤 John B Wilford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:02
CPC Classifications
B; B62; B62D; B62D7/00; B62D7/18; F; F16; F16C; F16C19/00; F16C19/02; F16C19/10; F16C19/54; F16C19/55; F16C2300/00; F16C2300/20; F16C2300/28; F16C2326/00; F16C2326/20; F16C2326/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE2030953C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |