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Patent US3500465A successfully refreshed from Google Patents.
US3500465A
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Portable electrically actuated roadside warning light
Assignee: HARVEY R BREKKE
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Filing: 1968-03-13
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Granted: 1970-03-10
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Expires: 1988-03-13
Abstract
No abstract record available.
Inventors
- 👤 Harvey R Brekke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:26
CPC Classifications
B; B60; B60Q; B60Q7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL53773C
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DE177724C
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US167479A
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FR538506A
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FR685526A
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US2528490A
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US2678790A
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US2816277A
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US2918668A
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US3092826A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |