Patent US3195137A successfully refreshed from Google Patents.
US3195137A
Expired / Lapsed
US
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Cassegrainian antenna with aperture blocking correction
Assignee: AT&T Inc
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Filing: 1960-12-27
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Granted: 1965-07-13
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Jakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:56
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/02; H01Q19/021; H01Q19/027; H01Q19/10; H01Q19/18; H01Q19/19; H01Q19/191; H01Q19/195
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN AN ANTENNA SYSTEM FOR RADIATING AND RECEIVING CIRCULARLY-POLARIZED SIGNALS, A PARABOLIODAL REFLECTOR HAVING A FOCUS AND A VERTEX, SAID PARABOLOID HAVING A HOLE LOCATED AT SAID VERTEX A HORN REFLECTOR LOCATED BEHIND SAID PARABOLOID, SAID HORN REFLECTOR HAVING AN ELLIPSOIDAL REFLECTING SURFACE WITH ONE FOCUS NEAR THE APEX OF SAID HORN REFLECTOR, AND A SECOND REFLECTOR FACING SAID PARABOLOID AND LOCATED TO CREATE A VIRTUAL SOURCE AND COLLECTOR OF SIGNALS AT SAID FOCUS OF SAID PARABOLOID, SAID SECOND REFLECTOR REFLECTING WITHOUT CHANGING THE DIRECTION OF ROTATION
Claim 2
Dependent Claim
87 words
IN AN ANTENNA SYSTEM FOR RADIATING AND RECEIVING CIRCULARLY-POLARIZED SIGNALS, A PARABOLIODAL REFLECTOR HAVING A FOCUS AND A VERTEX, SAID PARABOLOID HAVING A HOLE LOCATED AT SAID VERTEX A HORN REFLECTOR LOCATED BEHIND SAID PARABOLOID, SAID HORN REFLECTOR HAVING AN ELLIPSOIDAL REFLECTING SURFACE WITH ONE FOCUS NEAR THE APEX OF SAID HORN REFLECTOR, AND A SECOND REFLECTOR FACING SAID PARABOLOID AND LOCATED TO CREATE A VIRTUAL SOURCE AND COLLECTOR OF SIGNALS AT SAID FOCUS OF SAID PARABOLOID, SAID SECOND REFLECTOR REFLECTING WITHOUT CHANGING THE DIRECTION OF ROTATION
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |