US2550632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antitelescoping safety device for semitrailers
Assignee: Individual
•
Filing: 1948-05-18
•
Granted: 1951-04-24
•
Expires: 1968-05-18
Abstract
No abstract record available.
Inventors
- 👤 William R Young
- 👤 James M Bickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:17
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/10; B60; B60R; B60R19/00; B60R21/00; B60R2021/0065; B60R2021/0069; B60R2021/0074
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2066430A
Cited
US2002832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |