Patent US3243818A successfully refreshed from Google Patents.
US3243818A
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Dual band slot antenna having common waveguide with differing slots, each individualto its own band
Assignee: Raytheon Co
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Filing: 1962-08-22
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Granted: 1966-03-29
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Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Julian C Holtzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:54
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/0006; H01Q21/0037; H01Q21/0043; H01Q21/005; H01Q25/00; H01Q25/04; H01Q5/00; H01Q5/40; H01Q5/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A DUAL BAND SLOT ANTENNA COMPRISING A WAVEGUIDE STRUCTURE HAVING A BROAD WALL; MEANS FOR COUPLING TO SAID STRUCTURE A FIRST ELECTROMAGNETIC WAVE HAVING A FREQUENCY WITHIN A FIRST BAND AND A SECOND ELECTROMAGNETIC WAVE HAVING A FREQUENCY WITHIN A SECOND BAND; A FIRST SLOT DISPOSED IN SAID BROAD WALL AND COUPLED TO SAID FIRST ELECTROMAGNETIC WAVE; AND A PLURALITY OF SLOTS DISPOSED IN SAID BROAD WALL
Claim 2
Dependent Claim
67 words
A DUAL BAND SLOT ANTENNA COMPRISING A WAVEGUIDE STRUCTURE HAVING A BROAD WALL; MEANS FOR COUPLING TO SAID STRUCTURE A FIRST ELECTROMAGNETIC WAVE HAVING A FREQUENCY WITHIN A FIRST BAND AND A SECOND ELECTROMAGNETIC WAVE HAVING A FREQUENCY WITHIN A SECOND BAND; A FIRST SLOT DISPOSED IN SAID BROAD WALL AND COUPLED TO SAID FIRST ELECTROMAGNETIC WAVE; AND A PLURALITY OF SLOTS DISPOSED IN SAID BROAD WALL
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |