US2244933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicular traffic switch
Assignee: Individual
•
Filing: 1938-04-11
•
Granted: 1941-06-10
•
Expires: 1958-04-11
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:40
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/10; G; G08; G08G; G08G1/00; G08G1/01; G08G1/02; H01H; H01H3/00; H01H3/02; H01H3/14; H01H3/141; H01H3/142
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) | 1944-06-09 | 1944-12-09 | 1945-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-09 | 1948-12-09 | 1949-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-09 | 1952-12-09 | 1953-06-10 | $7700.00 | Window Closed / Lapsed |