Patent US3429290A successfully refreshed from Google Patents.
US3429290A
Expired / Lapsed
US
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Warning bell for vehicles moving in reverse
Assignee: EARL R HARRIS
•
Filing: 1966-07-26
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Granted: 1969-02-25
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Expires: 1986-07-26
Abstract
No abstract record available.
Inventors
- 👤 Earl R Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:43
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1251919A
Cited
US1374432A
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US1664871A
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US1901320A
Cited
FR893291A
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US2979020A
Cited
US3048142A
Cited
US3076960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |