US3370677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proximity sensing apparatus and sensor therefor
Assignee: Westinghouse Electric Corp
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Filing: 1966-01-12
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Granted: 1968-02-27
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Expires: 1986-01-12
Abstract
No abstract record available.
Inventors
- 👤 Edward F Federmann
- 👤 Richard W Stoeltzing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:02
CPC Classifications
B; B66; B66B; B66B13/00; B66B13/24; B66B13/26; G; G08; G08B; G08B13/00; G08B13/22; G08B13/26; H; H03; H03K; H03K17/00; H03K17/94; H03K17/945; H03K17/955; E; E05; E05F; E05F15/00; E05F15/40; E05F15/42; E05F15/46; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2720284A
Cited
US3018851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |