US3369428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking differential
Assignee: Ford Motor Co
•
Filing: 1965-10-22
•
Granted: 1968-02-20
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Hughson Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:26
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/22; F16H48/06; F16H48/08; F16H48/38; F16H48/42; F16H2048/423
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1750181A
Cited
US2045086A
Cited
US2446138A
Cited
CH252934A
Cited
US2807172A
Cited
US3212359A
Cited
US3211022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |