Patent US3471829A successfully refreshed from Google Patents.
US3471829A
Expired / Lapsed
US
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Multiple flashing light unit
Assignee: Fedtro Inc
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Filing: 1968-03-11
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Granted: 1969-10-07
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Expires: 1988-03-11
Abstract
No abstract record available.
Inventors
- 👤 Robert D Kahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:51
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/2611
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US884514A
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US1283751A
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US1555524A
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US2134313A
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US2528490A
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DE855064C
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US2799854A
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US2755373A
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US3090949A
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US3302195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |