US2530180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic clutch
Assignee: Eaton Corp
•
Filing: 1945-11-13
•
Granted: 1950-11-14
•
Expires: 1965-11-13
Abstract
No abstract record available.
Inventors
- 👤 Robert C Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:42
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/02; F16D27/04; F16D27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US469672A
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US735755A
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US1288270A
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US1623349A
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US1934783A
Cited
DE604601C
Cited
FR829954A
Cited
US2214391A
Cited
GB551790A
Cited
US2407963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |