Patent US2536918A successfully refreshed from Google Patents.
US2536918A
Expired / Lapsed
US
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Ignition key warning device for automobiles, etc.
Assignee: Individual
•
Filing: 1948-04-26
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Granted: 1951-01-02
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Expires: 1968-04-26
Abstract
No abstract record available.
Inventors
- 👤 Dorfman Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:10
CPC Classifications
E; E05; E05B; E05B45/00; E05B45/06; E05B45/0605; B; B60; B60Q; B60Q9/00; B60Q9/001
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) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |