US2847594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic slip coupling
Assignee: Individual
•
Filing: 1955-02-21
•
Granted: 1958-08-12
•
Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Cohen Elie
- 👤 Roth Szymon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:41
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; H02K49/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US643413A
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US2131035A
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US2223866A
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US2233060A
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US2409557A
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US2367163A
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US2428104A
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US2490789A
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US2565494A
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GB614091A
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US2630467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |