US3515905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiplexer switching network using a current switch and floating power supply
Assignee: Boeing North American Inc
•
Filing: 1967-03-20
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Granted: 1970-06-02
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Expires: 1987-03-20
Abstract
No abstract record available.
Inventors
- 👤 Hubert L Raper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:32
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/62; H03K17/6257
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2891171A
Cited
US2935623A
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US2990477A
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US3156831A
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US3247323A
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US3119064A
Cited
US3287623A
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US3292010A
Cited
US3389272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |