US1689075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic-light control
Assignee: Individual
•
Filing: 1927-01-28
•
Granted: 1928-10-23
•
Expires: 1947-01-28
Abstract
No abstract record available.
Inventors
- 👤 Ogden R Lehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:01
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/06; H01H51/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-10-23 | 1932-04-23 | 1932-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-10-23 | 1936-04-23 | 1936-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-10-23 | 1940-04-23 | 1940-10-23 | $7700.00 | Window Closed / Lapsed |