US2820872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical booster for power steering with variable resistance control
Assignee: Lear Inc
•
Filing: 1953-08-31
•
Granted: 1958-01-21
•
Expires: 1973-08-31
Abstract
No abstract record available.
Inventors
- 👤 William F Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:31
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/04; B62D5/043; B62D5/0457; B62D5/0475; B62D5/0478
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1376271A
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US1472257A
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US2167224A
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US2132023A
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US2311321A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |