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US3535657A
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Pulse-width modulation multiplier
Assignee: National Aeronautics and Space Administration
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Filing: 1967-09-13
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Granted: 1970-10-20
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Expires: 1987-09-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur William Carlson
- 👤 Charles A Furciniti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:57
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/04; H03K3/00; H03K3/02; H03K3/313; H03K3/315
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2987633A
Cited
US3064208A
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US3191065A
Cited
US3211926A
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US3246247A
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US3371291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |