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US2997573A
Expired / Lapsed
US
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Illuminated warning means
Assignee: Individual
•
Filing: 1956-10-17
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Granted: 1961-08-22
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Expires: 1976-10-17
Abstract
No abstract record available.
Inventors
- 👤 George L Nyborg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:18
CPC Classifications
B; B60; B60Q; B60Q7/00; G; G08; G08B; G08B5/00; G08B5/22; G08B5/36; G08B5/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1221524A
Cited
US1635372A
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US1753117A
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US2165562A
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US2296151A
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US2638576A
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US2597705A
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US2671212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |