US2624216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic differential lock
Assignee: Individual
•
Filing: 1950-08-15
•
Granted: 1953-01-06
•
Expires: 1970-08-15
Abstract
No abstract record available.
Inventors
- 👤 Frank S Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:05
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/24; F16H48/06; F16H48/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1104005A
Cited
US1361895A
Cited
US1556101A
Cited
US1647750A
Cited
US1938649A
Cited
US2375938A
Cited
US2545601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |