US3391404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive data transmission technique utilizing radar echoes
Assignee: United States Department of the Air Force
•
Filing: 1959-05-18
•
Granted: 1968-07-02
•
Expires: 1979-05-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Vogelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:34
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/75; G01S13/751; G01S13/756
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
AN INFORMATION TRANSMISSION SYSTEM COMPRISING: AN ANTENNA ELEMENT, MEANS FOR PRODUCING A RADAR SIGNAL, MEANS FOR DIRECTING SAID SIGNAL TOWARD SAID ANTENNA ELEMENT, A WAVEGUIDE CONNECTED TO SAID ANTENNA ELEMENT, A
Claim 2
Dependent Claim
31 words
AN INFORMATION TRANSMISSION SYSTEM COMPRISING: AN ANTENNA ELEMENT, MEANS FOR PRODUCING A RADAR SIGNAL, MEANS FOR DIRECTING SAID SIGNAL TOWARD SAID ANTENNA ELEMENT, A WAVEGUIDE CONNECTED TO SAID ANTENNA ELEMENT, A
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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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |