US3072856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweep recovery and altitude compensation circuit
Assignee: Individual
•
Filing: 1958-04-15
•
Granted: 1963-01-08
•
Expires: 1978-04-15
Abstract
No abstract record available.
Inventors
- 👤 Richard N Close
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:42
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; G01S7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A SWEEP RECOVERY CIRCUIT FOR A PLAN POSITION INDICATOR COMPRISING; A SWEEP INTEGRATING CIRCUIT, MEANS FOR APPLYA CHARGING CURRENT TO SAID SWEEP INTEGRATING CIRCUIT, OUTPUT MEANS CONNECTED TO SAID SWEEP INTEGRATING CIRCUIT, MEANS FOR COMPARING THE OUTPUT OF SAID INTEGRATING CIRCUIT WITH A REFERENCE VOLTAGE, A FEEDBACK AMPLIFIER CONNECTED BETWEEN THE OUTPUT OF SAID COMPARING MEANS AND THE INPUT OF SAID INTEGRATING CIRCUIT, A TWO-WAY ELECTRONIC SWITCH CONNECTED BETWEEN SAID AMPLIFIER AND THE INPUT OF SAID INTEGRATING CIRCUIT, AND MEANS FOR GATING SAID SWITCH
Claim 2
Dependent Claim
84 words
A SWEEP RECOVERY CIRCUIT FOR A PLAN POSITION INDICATOR COMPRISING; A SWEEP INTEGRATING CIRCUIT, MEANS FOR APPLYA CHARGING CURRENT TO SAID SWEEP INTEGRATING CIRCUIT, OUTPUT MEANS CONNECTED TO SAID SWEEP INTEGRATING CIRCUIT, MEANS FOR COMPARING THE OUTPUT OF SAID INTEGRATING CIRCUIT WITH A REFERENCE VOLTAGE, A FEEDBACK AMPLIFIER CONNECTED BETWEEN THE OUTPUT OF SAID COMPARING MEANS AND THE INPUT OF SAID INTEGRATING CIRCUIT, A TWO-WAY ELECTRONIC SWITCH CONNECTED BETWEEN SAID AMPLIFIER AND THE INPUT OF SAID INTEGRATING CIRCUIT, AND MEANS FOR GATING SAID SWITCH
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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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |