US2829213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back-up safety signal for automotive trucks
Assignee: Individual
•
Filing: 1955-12-27
•
Granted: 1958-04-01
•
Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 William J Brett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:41
CPC Classifications
F; F16; F16H; F16H59/00; F16H59/68; F16H59/70; B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/22; F16H2059/708
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1825917A
Cited
US2431117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |