US2749875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curb signalling device
Assignee: Individual
•
Filing: 1954-04-12
•
Granted: 1956-06-12
•
Expires: 1974-04-12
Abstract
No abstract record available.
Inventors
- 👤 Frees David
- 👤 Edwin L Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:23
CPC Classifications
B; B60; B60Q; B60Q9/00; B60Q9/002; B60Q9/003; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44291; Y10T24/44333; Y10T24/44496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1657342A
Cited
US2642830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |