US2718951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic friction device and control
Assignee: Dana Inc
•
Filing: 1950-08-25
•
Granted: 1955-09-27
•
Expires: 1970-08-25
Abstract
No abstract record available.
Inventors
- 👤 James A Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:07
CPC Classifications
F; F16; F16D; F16D55/00; F16D27/00; F16D27/02; F16D48/00; F16D48/06; F16D48/064; F16D2027/002; F16D2121/00; F16D2121/18; F16D2121/20; F16D2500/00; F16D2500/50; F16D2500/51; F16D2500/5104; F16D2500/5106; F16D2500/52; F16D2500/525; F16D2500/70; F16D2500/704; F16D2500/70402; F16D2500/7042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1094733A
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US1321003A
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US1023921A
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US1142852A
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US1915566A
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US2578716A
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US2519449A
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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) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |