Patent US4387355A successfully refreshed from Google Patents.
Patent US2902672A successfully refreshed from Google Patents.
US2902672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time-controlled activated vehicular speed limit signal
Assignee: Individual
•
Filing: 1956-03-05
•
Granted: 1959-09-01
•
Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 Irwin M Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:54
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/095
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1514608A
Cited
US1949996A
Cited
US2241998A
Cited
US2230994A
Cited
US2121093A
Cited
US2294883A
Cited
US2409957A
Cited
US2625598A
Cited
US2612548A
Cited
US2624307A
Cited
US2679635A
Cited
US2798147A
Cited
US2797400A
Cited
US2866175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |