US3171986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive analog holding circuit
Assignee: International Business Machines Corp
•
Filing: 1959-12-31
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Granted: 1965-03-02
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Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Bonner
- 👤 Wilhelm G Spruth
- 👤 William P Margopoulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:30
CPC Classifications
G; G11; G11C; G11C27/00; G11C27/02; G11C27/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PASSIVE ELECTRICAL ANALOG HOLDING CIRCUIT COMPRISING A SOURCE OF VOLTAGE, A FIRST ELECTRICAL ENERGY STORAGE MEANS CONNECTED ACROSS SAID SOURCE, A PAIR OF OUTPUT TERMINALS, AN OUTPUT CIRCUIT CONNECTED TO SAID FIRST STORAGE MEANS AND ACROSS SAID OUTPUT TERMINALS, SAID OUTPUT CIRCUIT INCLUDING A SECOND ELECTRICAL ENERGY STORAGE MEANS AND A RESISTIVE IMPEDANCE CONNECTED IN SERIES, MEANS FOR DISCONNECTING SAID SOURCE FROM SAID FIRST STORAGE MEANS AND FOR TRANSFERRING THE ELECTRICAL ENERGY STORED IN SAID FIRST STORAGE MEANS THROUGH SAID RESISTIVE IMPEDANCE TO SAID SECOND STORAGE MEANS, SO THAT THE VOLTAGE DEVELOPED ACROSS SAID OUTPUT TERMINALS IS SUBSTANTIALLY PROPORTIONAL TO THE VOLTAGE OF SAID SOURCE BOTH BEFORE AND AFTER SAID SOURCE IS DISCONNECTED FROM SAID FIRST STORAGE MEANS.
Claim 2
Dependent Claim
119 words
A PASSIVE ELECTRICAL ANALOG HOLDING CIRCUIT COMPRISING A SOURCE OF VOLTAGE, A FIRST ELECTRICAL ENERGY STORAGE MEANS CONNECTED ACROSS SAID SOURCE, A PAIR OF OUTPUT TERMINALS, AN OUTPUT CIRCUIT CONNECTED TO SAID FIRST STORAGE MEANS AND ACROSS SAID OUTPUT TERMINALS, SAID OUTPUT CIRCUIT INCLUDING A SECOND ELECTRICAL ENERGY STORAGE MEANS AND A RESISTIVE IMPEDANCE CONNECTED IN SERIES, MEANS FOR DISCONNECTING SAID SOURCE FROM SAID FIRST STORAGE MEANS AND FOR TRANSFERRING THE ELECTRICAL ENERGY STORED IN SAID FIRST STORAGE MEANS THROUGH SAID RESISTIVE IMPEDANCE TO SAID SECOND STORAGE MEANS, SO THAT THE VOLTAGE DEVELOPED ACROSS SAID OUTPUT TERMINALS IS SUBSTANTIALLY PROPORTIONAL TO THE VOLTAGE OF SAID SOURCE BOTH BEFORE AND AFTER SAID SOURCE IS DISCONNECTED FROM SAID FIRST STORAGE MEANS.
References Cited (Backward Citations)
US2572080A
Cited
US2470895A
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US2999208A
Cited
US2932017A
Cited
US2892106A
Cited
US2889470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |