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Patent US3535680A successfully refreshed from Google Patents.
US3535680A
Expired / Lapsed
US
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Vehicle signaling systems
Assignee: Motors Liquidation Co
•
Filing: 1967-06-14
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Granted: 1970-10-20
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Expires: 1987-06-14
Abstract
No abstract record available.
Inventors
- 👤 George W Onksen
- 👤 Kenneth R Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:35
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2810899A
Cited
US3215979A
Cited
US3244934A
Cited
US3320586A
Cited
US3281786A
Cited
US3444514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |