Patent US1667193A successfully refreshed from Google Patents.
US2597785A
Expired / Lapsed
US
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Latching means for electric motor shafts
Assignee: SPX Technologies Inc
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Filing: 1948-08-03
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Granted: 1952-05-20
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Expires: 1968-08-03
Abstract
No abstract record available.
Inventors
- 👤 Oscar S Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:31
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/02; B23Q16/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1415300A
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US1578348A
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FR649901A
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US2051400A
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FR810787A
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US2339232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |