US2869504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency road sentinel
Assignee: Individual
•
Filing: 1956-04-24
•
Granted: 1959-01-20
•
Expires: 1976-04-24
Abstract
No abstract record available.
Inventors
- 👤 Franklin T Andrews
- 👤 Norman E Huston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:40
CPC Classifications
B; B60; B60Q; B60Q7/00; B60Q7/005; Y; Y10; Y10S; Y10S248/00; Y10S248/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE891970C
Cited
US1759519A
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US1750118A
Cited
US2090157A
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US2164985A
Cited
US2419823A
Cited
US2561016A
Cited
US2610548A
Cited
FR1036344A
Cited
US2719506A
Cited
US2702955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |