Patent US3510837A successfully refreshed from Google Patents.
US3510837A
Expired / Lapsed
US
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Vehicle back-up warning device
Assignee: WILLIAM P LEPORE
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Filing: 1967-07-06
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Granted: 1970-05-05
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Expires: 1987-07-06
Abstract
No abstract record available.
Inventors
- 👤 William P Lepore
- 👤 Henry D Lepore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:43
CPC Classifications
B; B60; B60Q; B60Q9/00; B60Q9/002; B60Q9/003; B60Q1/00; B60Q1/02; B60Q1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |