US2931026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warning signal device
Assignee: NELSON PRICE Inc
•
Filing: 1956-02-06
•
Granted: 1960-03-29
•
Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Nelson Francis Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:31
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/095
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1592455A
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US2025235A
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US2303086A
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US2272855A
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US2366929A
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US2478908A
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US2625598A
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US2538854A
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US2709244A
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US2540341A
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US2612548A
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US2702889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |