US2638516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle switching device
Assignee: Old Carco LLC
•
Filing: 1951-02-20
•
Granted: 1953-05-12
•
Expires: 1971-02-20
Abstract
No abstract record available.
Inventors
- 👤 Louis B Forman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:01
CPC Classifications
E; E05; E05B; E05B81/00; E05B81/54; E05B81/64; E05B81/66; E05B85/00; E05B85/20; E05B85/24; E05B85/28; Y; Y10; Y10T; Y10T292/00; Y10T292/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2193483A
Cited
US2467815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |