US1938848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device for differential mechanisms
Assignee: International Motor Co
•
Filing: 1932-01-26
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Granted: 1933-12-12
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Expires: 1952-01-26
Abstract
No abstract record available.
Inventors
- 👤 Philip E Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:57
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/295; F16H48/06; F16H48/08; F16H48/24; F16H48/30; F16H2048/204; F16H2048/305; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19167; Y10T74/19219; Y10T74/19293; Y10T74/19298; Y10T74/19307; Y10T74/19312
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-12-11 | 1937-06-12 | 1937-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-11 | 1941-06-12 | 1941-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-11 | 1945-06-12 | 1945-12-12 | $7700.00 | Window Closed / Lapsed |