US3179935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Random frequency radar system
Assignee: Maxson Electronics Corp
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Filing: 1956-08-09
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Granted: 1965-04-20
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Expires: 1976-08-09
Abstract
No abstract record available.
Inventors
- 👤 Blass Judd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:46
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A SYSTEM COMPRISING TRANSMITTING MEANS FOR TRANSMITTING RADIO FREQUENCY WAVES, MEANS FOR CONTINUALLY VARYING THE FREQUENCY OF SAID WAVES IN A RANDOM MANNER AND BY RANDOM AMOUNTS OVER A GIVEN FREQUENCY BAND, RECEIVING MEANS FOR SELECTIVELY RECEIVING ECHOES OF SAID WAVES REFLECTED BY DISTANT OBJECTS, SAID RECEIVING MEANS INCLUDING TUNING MEANS FOR TRACKING THE FREQUENCY OF SAID WAVES, SAID TUNING MEANS COMPRISING A PLURALITY OF SETS OF SELECTIVE CIRCUITS WITH THE CIRCUITS OF EACH SET HAVING SUBSTANTIALLY ADJACENT PASS BANDS, AND MEANS RESPONSIVE TO THE FREQUENCY OF SAID WAVES FOR SELECTING ONE CIRCUIT OF EACH SET AND AND INTERCONNECTING THE SELECTED CIRCUITS IN CASCADE TO FORM A SELECTIVE RECEIVING CHANNEL TUNED TO THE FREQUENCY OF THE WAVES.
Claim 2
Independent Claim
117 words
A SYSTEM COMPRISING TRANSMITTING MEANS FOR TRANSMITTING RADIO FREQUENCY WAVES, MEANS FOR CONTINUALLY VARYING THE FREQUENCY OF SAID WAVES IN A RANDOM MANNER AND BY RANDOM AMOUNTS OVER A GIVEN FREQUENCY BAND, RECEIVING MEANS FOR SELECTIVELY RECEIVING ECHOES OF SAID WAVES REFLECTED BY DISTANT OBJECTS, SAID RECEIVING MEANS INCLUDING TUNING MEANS FOR TRACKING THE FREQUENCY OF SAID WAVES, SAID TUNING MEANS COMPRISING A PLURALITY OF SETS OF SELECTIVE CIRCUITS WITH THE CIRCUITS OF EACH SET HAVING SUBSTANTIALLY ADJACENT PASS BANDS, AND MEANS RESPONSIVE TO THE FREQUENCY OF SAID WAVES FOR SELECTING ONE CIRCUIT OF EACH SET AND AND INTERCONNECTING THE SELECTED CIRCUITS IN CASCADE TO FORM A SELECTIVE RECEIVING CHANNEL TUNED TO THE FREQUENCY OF THE WAVES.
References Cited (Backward Citations)
US2664522A
Cited
US2522367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |