US2592668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking mechanism for a differential
Assignee: Individual
•
Filing: 1949-08-24
•
Granted: 1952-04-15
•
Expires: 1969-08-24
Abstract
No abstract record available.
Inventors
- 👤 Dufour Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:28
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/037; F16H48/00; F16H48/06; F16H48/08; F16H48/20; F16H48/24; F16H48/30; F16H2048/082; F16H2048/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US275279A
Cited
US306403A
Cited
US699808A
Cited
GB190506424A
Cited
US928293A
Cited
US1134665A
Cited
US1704803A
Cited
US2420294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |