Patent US3522532A successfully refreshed from Google Patents.
US3522532A
Expired / Lapsed
US
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Comparison system for testing points in a circuit using a multi-channel analog signal record and playback means
Assignee: McDonnell Douglas Corp
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Filing: 1965-10-21
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Granted: 1970-08-04
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Mccoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:08
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/22; H03K5/24; G; G11; G11B; G11B20/00; G11B20/10; G11B20/18; G11B20/1816; G11B20/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2690299A
Cited
US2774056A
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US2996666A
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US3099154A
Cited
US3219927A
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US3395340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |