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US2578562A
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US
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Automatic warning signal for motor vehicles
Assignee: Individual
•
Filing: 1950-03-10
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Granted: 1951-12-11
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Expires: 1970-03-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Lapadura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1525541A
Cited
US1880849A
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US1911295A
Cited
US2128769A
Cited
US2266201A
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US2260680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |