US3493085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive locking caster brake
Assignee: The Colson Corp
•
Filing: 1968-03-18
•
Granted: 1970-02-03
•
Expires: 1988-03-18
Abstract
No abstract record available.
Inventors
- 👤 Anthony C Libhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:24
CPC Classifications
B; B60; B60B; B60B33/00; B60B33/0078; B60B33/02; B60B33/021; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18888; Y10T74/1892; Y10T74/1896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1941122A
Cited
US1998236A
Cited
US2583568A
Cited
US2827985A
Cited
US2782666A
Cited
US2915775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |