US2875875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic clutch for use on a shaft
Assignee: Maschinenfabrik Heid AG
•
Filing: 1954-11-08
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Granted: 1959-03-03
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Expires: 1974-11-08
Abstract
No abstract record available.
Inventors
- 👤 Prahauser Heinrich
- 👤 Petschauer Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:06
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/10; F16D27/108; F16D27/112; F16D27/115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19150E
Cited
US2732725A
Cited
US1622939A
Cited
US1746365A
Cited
DE472567C
Cited
US2549214A
Cited
GB629311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |