Patent US2296151A successfully refreshed from Google Patents.
US2296151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal lamp unit
Assignee: Individual
•
Filing: 1940-04-01
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Granted: 1942-09-15
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Expires: 1960-04-01
Abstract
No abstract record available.
Inventors
- 👤 Samuel M Dover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:45
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; F; F21; F21S; F21S43/00; F21S43/10; F21S43/13; F21S43/15
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) | 1945-09-14 | 1946-03-16 | 1946-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-09-14 | 1950-03-16 | 1950-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-09-14 | 1954-03-16 | 1954-09-15 | $7700.00 | Window Closed / Lapsed |