US3026503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleep warning system for vehicle operator
Assignee: Individual
•
Filing: 1957-11-13
•
Granted: 1962-03-20
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Expires: 1977-11-13
Abstract
No abstract record available.
Inventors
- 👤 Donald W Scheer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:24
CPC Classifications
G; G08; G08B; G08B21/00; G08B21/02; G08B21/06; B; B60; B60W; B60W2540/00; B60W2540/18
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) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |