US2971404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking differential
Assignee: Individual
•
Filing: 1958-08-26
•
Granted: 1961-02-14
•
Expires: 1978-08-26
Abstract
No abstract record available.
Inventors
- 👤 Ray F Thornton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:42
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/22; F16H48/06; F16H48/08; F16H2048/085; F16H48/38; F16H48/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2064152A
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FR849452A
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US2234592A
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FR50375E
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US2351996A
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DE736780C
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DE739012C
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US2397673A
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GB620176A
Cited
US2569533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |