Patent US5647857A successfully refreshed from Google Patents.
US3153152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable limiter for analog computer using a fixed zener diode
Assignee: Individual
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Filing: 1961-02-09
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Granted: 1964-10-13
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Expires: 1981-02-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Henry C Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:03
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/25; H; H03; H03G; H03G11/00; H03G11/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
A FUNCTION GENERATOR COMPRISING INPUT TERMINAL MEANS HAVING ONE SIDE THEREOF GROUNDED FOR RECEIVING AN INPUT VOLTAGE, OUTPUT TERMINAL MEANS, AN ELECTRICAL NETWORK FOR AMPLIFYING THE INPUT VOLTAGE AND INTERCONNECTING SAID INPUT TERMINAL MEANS WITH SAID OUTPUT TERMINAL MEANS, A VARIABLE ZENER DIODE LIMITER MEANS CONNECTED TO SAID IN-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |