Patent US3210672A successfully refreshed from Google Patents.
US3210672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low frequency difference amplifier utilizing electrochemical integrating device
Assignee: Self-Organizing Systems Inc
•
Filing: 1962-05-16
•
Granted: 1965-10-05
•
Expires: 1982-05-16
Abstract
No abstract record available.
Inventors
- 👤 James R Cox
- 👤 Jerry D Merryman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:53
CPC Classifications
H; H03; H03F; H03F99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A LOW FREQUENCY AMPLIFIER THAT COMPRISES A FIRST ELECTRO-CHEMICAL INTEGRATING DEVICE AND A SECOND ELECTROCHEMICAL INTEGRATING DEVICE, EACH OF SAID DEVICES HAVING AN INPUT ELECTRODE, A READOUT ELECTRODE AND A COMMON ELECTRODE, MEANS CONNECTING THE COMMON ELECTRODES OF SAID FIRST DEVICE AND SAID SECOND DEVICE TO A CONSTANT CURRENT SOURCE, MEANS CONNECTED TO THE READOUT ELECTRODES OF SAID FIRST DEVICE AND SAID DEVICE FOR PRODUCING AT A PAIR OF OUTPUT TERMINALS A VOLTAGE PROPORTIONAL TO THE CHANGE IN READOUT CURRENT OF EACH DEVICE PRODUCED RESPONSIVE TO THE PRESENCE OF AN INPUT SIGNAL AT THE INPUT ELECTRODE OF ONE OF THE DEVICES AND MEANS CONNECTED TO AT LEAST ONE OF THE READOUT ELECTRODE AND THE COMMON ELECTRODE OF EACH OF SAID ELECTRO-CHEMICAL DEVICES FOR ESTABLISHING A MAXIMUM POTENTIAL BETWEEN GROUND AND AN ELECTRODE CONNECTED TO SAID LAST MENTIONED MEANS.
Claim 2
Dependent Claim
138 words
A LOW FREQUENCY AMPLIFIER THAT COMPRISES A FIRST ELECTRO-CHEMICAL INTEGRATING DEVICE AND A SECOND ELECTROCHEMICAL INTEGRATING DEVICE, EACH OF SAID DEVICES HAVING AN INPUT ELECTRODE, A READOUT ELECTRODE AND A COMMON ELECTRODE, MEANS CONNECTING THE COMMON ELECTRODES OF SAID FIRST DEVICE AND SAID SECOND DEVICE TO A CONSTANT CURRENT SOURCE, MEANS CONNECTED TO THE READOUT ELECTRODES OF SAID FIRST DEVICE AND SAID DEVICE FOR PRODUCING AT A PAIR OF OUTPUT TERMINALS A VOLTAGE PROPORTIONAL TO THE CHANGE IN READOUT CURRENT OF EACH DEVICE PRODUCED RESPONSIVE TO THE PRESENCE OF AN INPUT SIGNAL AT THE INPUT ELECTRODE OF ONE OF THE DEVICES AND MEANS CONNECTED TO AT LEAST ONE OF THE READOUT ELECTRODE AND THE COMMON ELECTRODE OF EACH OF SAID ELECTRO-CHEMICAL DEVICES FOR ESTABLISHING A MAXIMUM POTENTIAL BETWEEN GROUND AND AN ELECTRODE CONNECTED TO SAID LAST MENTIONED MEANS.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |