US2493755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle speed and path signaling system
Assignee: Individual
•
Filing: 1944-02-24
•
Granted: 1950-01-10
•
Expires: 1964-02-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas M Ferrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:36
CPC Classifications
A; A63; A63H; A63H18/00; A63H18/10; G; G05; G05D; G05D1/00; G05D1/02; G05D1/021; G05D1/0231; G05D1/0244; G08; G08G; G08G1/00; G05D1/0259; G05D1/0261; G05D1/0268; G05D1/0272
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |