US3047839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer hitch safety device
Assignee: RAYMOND R BROWN
•
Filing: 1959-12-02
•
Granted: 1962-07-31
•
Expires: 1979-12-02
Abstract
No abstract record available.
Inventors
- 👤 Raymond R Brown
- 👤 Donald D Goff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:57
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/58; B60D1/583; B60D1/01; B60D1/06; B60D1/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |