US3458774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic proximity detector
Assignee: Res Associates Inc
•
Filing: 1967-01-03
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Granted: 1969-07-29
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Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Ivan J Garshelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:51
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/04; H; H03; H03K; H03K17/00; H03K17/94; H03K17/945; H03K17/95; H03K17/952; H03K17/9525
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 |