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Patent US3458239A successfully refreshed from Google Patents.
US3458239A
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Three-axis magnetic suspension system
Assignee: Boeing North American Inc
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Filing: 1967-10-02
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Granted: 1969-07-29
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Expires: 1987-10-02
Abstract
No abstract record available.
Inventors
- 👤 Adrian K Dorsman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:20
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/04; F16C32/0406; F16C32/044; F16C32/0444; F16C32/0446; F16C32/0448; F16C32/0474; F16C32/0489; F16C32/0491; G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/16; G01C19/24; F16C2370/00; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1232; Y10T74/125
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |