Patent US2979610A successfully refreshed from Google Patents.
Patent US3312970A successfully refreshed from Google Patents.
US3312970A
Expired / Lapsed
US
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Pulse echo recognition systems
Assignee: Unisys Corp
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Filing: 1941-06-27
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Granted: 1967-04-04
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Expires: 1961-06-27
Abstract
No abstract record available.
Inventors
- 👤 Donald S Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:29
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PULSE ECHO RECOGNITION SYSTEM FOR AIR OR SURFACE CRAFT INCLUDING A STATION CONSISTING OF A PULSE TRANSMITTER, AND A PULSE ECHO RECEIVER, AN INDICATOR CONNECTED TO SAID RECEIVER FOR INDICATING THE DISTANCES OF PULSE REFLECTING CRAFT, MEANS LOCATED ON SAID CRAFT FOR RADIATING FROM SAID CRAFT PULSE RECOGNITION SIGNALS IN RESPONSE TO CHALLENGING SIGNALS FROM SAID STATION, MEANS LOCATED NEAR SAID STATION FOR RECEIVING SAID PULSE RECOGNITION SIGNALS, AND MEANS FOR APPLYING SAID RECOGNITION SIGNALS TO SAID INDICATOR SO THAT EACH OF SAID DISTANCE INDICATING SIGNALS MAY BE COMPARED TO EACH OF SAID INDICATED RECOGNITION SIGNALS.
Claim 2
Dependent Claim
97 words
A PULSE ECHO RECOGNITION SYSTEM FOR AIR OR SURFACE CRAFT INCLUDING A STATION CONSISTING OF A PULSE TRANSMITTER, AND A PULSE ECHO RECEIVER, AN INDICATOR CONNECTED TO SAID RECEIVER FOR INDICATING THE DISTANCES OF PULSE REFLECTING CRAFT, MEANS LOCATED ON SAID CRAFT FOR RADIATING FROM SAID CRAFT PULSE RECOGNITION SIGNALS IN RESPONSE TO CHALLENGING SIGNALS FROM SAID STATION, MEANS LOCATED NEAR SAID STATION FOR RECEIVING SAID PULSE RECOGNITION SIGNALS, AND MEANS FOR APPLYING SAID RECOGNITION SIGNALS TO SAID INDICATOR SO THAT EACH OF SAID DISTANCE INDICATING SIGNALS MAY BE COMPARED TO EACH OF SAID INDICATED RECOGNITION SIGNALS.
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) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |