US3191017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog multiplier
Assignee: Hitachi Ltd
•
Filing: 1962-09-11
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Granted: 1965-06-22
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Expires: 1982-09-11
Abstract
No abstract record available.
Inventors
- 👤 Miura Takeo
- 👤 Iwata Junzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:50
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/164
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
A MULTIPLIER COMPRISING MAGNETIC SUMMING-AMPLIFIER MEANS HAVING A PAIR OF FLUX-OPPOSED CONTROL WINDINGS ENERGIZABLE BY RESPECTIVE INPUT SIGNALS AND HAVING RESPECTIVE INPUT TERMINALS FOR PRODUCING AN OUTPUT SIGNAL DETERMINED BY THE SUBTRACTIVE COMBINATION OF THE INPUTS SIGNALS AND PROPORTIONAL TO THE DIFFERENCE OF THE SUMS OF INPUT SIGNALS APPLIED TO EACH OF SAID TERMINALS; FIRST INPUT IMPEDANCE
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |