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US2748322A
Expired / Lapsed
US
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Lifting magnet control system
Assignee: Individual
•
Filing: 1953-04-02
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Granted: 1956-05-29
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Expires: 1973-04-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph V Oswald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:51
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/18; B66C1/00; B66C1/04; B66C1/06; B66C1/08; B66C2700/00; B66C2700/08; B66C2700/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |