US3445835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitive proximity sensor
Assignee: R F CONTROLS Inc
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Filing: 1965-11-09
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Granted: 1969-05-20
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Expires: 1985-11-09
Abstract
No abstract record available.
Inventors
- 👤 Solly L Fudaley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:59
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22; G08B13/24; F; F16; F16P; F16P3/00; F16P3/12; F16P3/14; F16P3/147; F16P3/148; G01; G01V; G01V3/00; G01V3/08; G01V3/10; G01V3/101; H; H03; H03K; H03K17/00; H03K17/94; H03K17/945; H03K17/955
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) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |