Patent US3317855A successfully refreshed from Google Patents.
US3317855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillator including a tunnel diode as a two-level switch
Assignee: Massachusetts Institute of Technology
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Filing: 1965-07-15
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Granted: 1967-05-02
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Expires: 1985-07-15
Abstract
No abstract record available.
Inventors
- 👤 Cho Yohan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:09
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/80; H03B; H03B7/00; H03B7/02; H03B7/06; H03B7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A SIGNAL GENERATOR COMPRISING, MEANS FOR PRODUCING A SUBSTANTIALLY STEADY D.C. INPUT SIGNAL, MEANS FOR COMPARING SIGNALS PRODUCING AN OUTPUT REPRESENTATIVE OF THE DIFFERENCE BETWEEN MAGNITUDES OF SAID COMPARED SIGNALS, SWITCHING MEANS RESPONSIVE TO SAID COMPARING MEANS FOR PRODUCING FIRST AND SECOND DIFFERENT SIGNAL LEVELS DURING A PULSE TRAIN, MEANS FOR DELAYING SAID DIFFERENT SIGNAL LEVELS, AND MEANS FOR COUPLING OF DELAYED DIFFERENT SIGNAL LEVELS TO SAID COMPARING MEANS, WHEREBY SAID COMPARING MEANS RESPONDS TO SAID STEADY D.C. SIGNAL AND SAID FIRST DELAYED SIGNAL LEVEL TO PRODUCE SAID OUTPUT WHICH CAUSES SUCH SWITCHING MEANS TO SWITCH TO SAID SECOND SIGNAL LEVEL, AND ALSO RESPONDS TO SAID STEADY D.C. SIGNAL AND SAID SECOND DELAYED SIGNAL LEVEL TO PRODUCE SAID OUTPUT WHICH CAUSES SAID SWITCHING MEANS TO SWITCH TO SAID FIRST SIGNAL LEVEL.
Claim 2
Dependent Claim
131 words
A SIGNAL GENERATOR COMPRISING, MEANS FOR PRODUCING A SUBSTANTIALLY STEADY D.C. INPUT SIGNAL, MEANS FOR COMPARING SIGNALS PRODUCING AN OUTPUT REPRESENTATIVE OF THE DIFFERENCE BETWEEN MAGNITUDES OF SAID COMPARED SIGNALS, SWITCHING MEANS RESPONSIVE TO SAID COMPARING MEANS FOR PRODUCING FIRST AND SECOND DIFFERENT SIGNAL LEVELS DURING A PULSE TRAIN, MEANS FOR DELAYING SAID DIFFERENT SIGNAL LEVELS, AND MEANS FOR COUPLING OF DELAYED DIFFERENT SIGNAL LEVELS TO SAID COMPARING MEANS, WHEREBY SAID COMPARING MEANS RESPONDS TO SAID STEADY D.C. SIGNAL AND SAID FIRST DELAYED SIGNAL LEVEL TO PRODUCE SAID OUTPUT WHICH CAUSES SUCH SWITCHING MEANS TO SWITCH TO SAID SECOND SIGNAL LEVEL, AND ALSO RESPONDS TO SAID STEADY D.C. SIGNAL AND SAID SECOND DELAYED SIGNAL LEVEL TO PRODUCE SAID OUTPUT WHICH CAUSES SAID SWITCHING MEANS TO SWITCH TO SAID FIRST SIGNAL LEVEL.
References Cited (Backward Citations)
US3089089A
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US3196358A
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US3223981A
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US3215854A
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US3222543A
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US3206686A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |