US3457482A
Expired / Lapsed
US
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Magnetic positioning device
Assignee: Individual
•
Filing: 1967-10-30
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Granted: 1969-07-22
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Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 Bruce A Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:28
CPC Classifications
G; G01; G01R; G01R17/00; B; B43; B43L; B43L13/00; B43L13/02; B43L13/022; B43L13/024; B43L5/00; B43L5/005; G01D; G01D5/00; G01D5/12; G06; G06K; G06K15/00; G06K15/22; H; H02; H02K; H02K41/00; H02K41/02; H02K41/03; H02K2201/00; H02K2201/18
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) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |