US3302203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic channel guidance system
Assignee: Individual
•
Filing: 1964-12-23
•
Granted: 1967-01-31
•
Expires: 1984-12-23
Abstract
No abstract record available.
Inventors
- 👤 Peter P Schauffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:45
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/02; G01S5/12; G01S3/00; G01S3/02; G01S3/14; G01S3/46; G01S3/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A CHANNEL-NAVIGATION SYSTEM COMPRISING AT LEAST ONE PAIR OF RADIO RANGE STATIONS LOCATED ALONG AN EXTENSION OF THE CHANNEL CENTER LINE AND HAVING MEANS FOR RADIATING TIME-SEPARATED SIGNALS, SIGNAL-RECEIVING MEANS AT LATERALLY-SPACED POINTS OF A VEHICLE FOR RECEIVING THE SIGNALS FROM SAID STATIONS, MEANS ON BOARD SAID VEHICLE FOR COMPARING THE PHASE OF THE SIGNALS AS RECEIVED FROM EACH OF SAID STATIONS BY SAID SIGNAL-RECEIVING MEANS AS A MEASURE OF THE SIMULTANEOUS RELATIVE BEARING OF SAID STATIONS, MEANS ON BOARD SAID VEHICLE FOR TRANSMITTING A SYNCHRONIZED SIGNAL AT A SEPARATE FREQUENCY, MEANS AT THE NEAREST RANGE STATION FOR RECEIVING THIS SIGNAL AND TRANSMITTING A RESPONSE, AND MEANS ABOARD SAID VEHICLE FOR RECEIVING THIS RESPONSE AND TRANSMISSION AS A TIME RELATIONSHIP TO THE ORIGINAL TRANSMISSION AS A MEASURE OF SAID VEHICLE''S DISTANCE FROM SAID STATION, INDICATING MEANS RESPONSIVE TO SAID DISTANCE SIGNALS MEANS ON BOARD SAID VEHICLE FOR COMBINING THE ALGEBRAIC DIFFERENT BETWEEN SAID SIMULTANEOUS RELATIVE BEARING INFORMATION WITH SAID DISTANCE INFORMATION AS A MEASURE OF THE LATERAL OFFSET OF SAID VEHICLE WITH RESPECT TO SAID CHANNEL CENTER LINE, AND INDICATING MEANS RESPONSIVE TO SAID OFFSET SIGNALS.
Claim 2
Dependent Claim
186 words
A CHANNEL-NAVIGATION SYSTEM COMPRISING AT LEAST ONE PAIR OF RADIO RANGE STATIONS LOCATED ALONG AN EXTENSION OF THE CHANNEL CENTER LINE AND HAVING MEANS FOR RADIATING TIME-SEPARATED SIGNALS, SIGNAL-RECEIVING MEANS AT LATERALLY-SPACED POINTS OF A VEHICLE FOR RECEIVING THE SIGNALS FROM SAID STATIONS, MEANS ON BOARD SAID VEHICLE FOR COMPARING THE PHASE OF THE SIGNALS AS RECEIVED FROM EACH OF SAID STATIONS BY SAID SIGNAL-RECEIVING MEANS AS A MEASURE OF THE SIMULTANEOUS RELATIVE BEARING OF SAID STATIONS, MEANS ON BOARD SAID VEHICLE FOR TRANSMITTING A SYNCHRONIZED SIGNAL AT A SEPARATE FREQUENCY, MEANS AT THE NEAREST RANGE STATION FOR RECEIVING THIS SIGNAL AND TRANSMITTING A RESPONSE, AND MEANS ABOARD SAID VEHICLE FOR RECEIVING THIS RESPONSE AND TRANSMISSION AS A TIME RELATIONSHIP TO THE ORIGINAL TRANSMISSION AS A MEASURE OF SAID VEHICLE''S DISTANCE FROM SAID STATION, INDICATING MEANS RESPONSIVE TO SAID DISTANCE SIGNALS MEANS ON BOARD SAID VEHICLE FOR COMBINING THE ALGEBRAIC DIFFERENT BETWEEN SAID SIMULTANEOUS RELATIVE BEARING INFORMATION WITH SAID DISTANCE INFORMATION AS A MEASURE OF THE LATERAL OFFSET OF SAID VEHICLE WITH RESPECT TO SAID CHANNEL CENTER LINE, AND INDICATING MEANS RESPONSIVE TO SAID OFFSET SIGNALS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |