US3207923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1962-02-28
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Granted: 1965-09-21
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Expires: 1982-02-28
Abstract
No abstract record available.
Inventors
- 👤 Prager Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:18
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/02; H03K4/023; H03K25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A STAIR-CASE GENERATOR COMPRISING AN INPUT PULSE SOURCE; A FIRST CAPACITOR COUPLED TO SAID INPUT SOURCE; A DIODE HAVING ITS ANODE CONNECTED TO SAID FIRST CAPACITOR AND ITS CATHODE CONNECTED TO SAID PULSE SOURCE; A TRANSISTOR HAVING AN EMITTER CONNECTED TO THE ANODE OF SAID DIODE, A BASE CONNECTED TO THE CATHODE OF SAID DIODE, AND A COLLECTOR; A SECOND CAPACITOR CONNECTED BETWEEN SAID COLLECTOR AND SAID BASE TRANSISTOR; A SOURCE OF DIRECT CURRENT; AND A SWITCH FOR REMOVABLY CONNECTING SAID DIRECT-CURRENT SOURCE TO THE JUNCTION OF SAID COLLECTOR AND SAID SECOND CAPACITOR.
Claim 2
Dependent Claim
93 words
A STAIR-CASE GENERATOR COMPRISING AN INPUT PULSE SOURCE; A FIRST CAPACITOR COUPLED TO SAID INPUT SOURCE; A DIODE HAVING ITS ANODE CONNECTED TO SAID FIRST CAPACITOR AND ITS CATHODE CONNECTED TO SAID PULSE SOURCE; A TRANSISTOR HAVING AN EMITTER CONNECTED TO THE ANODE OF SAID DIODE, A BASE CONNECTED TO THE CATHODE OF SAID DIODE, AND A COLLECTOR; A SECOND CAPACITOR CONNECTED BETWEEN SAID COLLECTOR AND SAID BASE TRANSISTOR; A SOURCE OF DIRECT CURRENT; AND A SWITCH FOR REMOVABLY CONNECTING SAID DIRECT-CURRENT SOURCE TO THE JUNCTION OF SAID COLLECTOR AND SAID SECOND CAPACITOR.
References Cited (Backward Citations)
CA584260A
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CA598603A
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US2584990A
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US2595208A
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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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |