Patent US3219747A successfully refreshed from Google Patents.
US3219747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielding arrangement with wave guide below cutoff
Assignee: Individual
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Filing: 1963-02-08
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Granted: 1965-11-23
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Expires: 1983-02-08
Abstract
No abstract record available.
Inventors
- 👤 James H Mcadams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:19
CPC Classifications
H; H01; H01P; H01P1/00; H05; H05B; H05B6/00; H05B6/64; H05B6/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A RADIO FREQUENCY SHIELDING ARRANGEMENT COMPRISING: A WALL MEMBER HAVING AN APERTURE THEREIN, AND A REMOVABLE COVER ADJACENT SAID APERTURE COMPLETELY COVERING SAID APERTURE AND DIRECT CURRENT ISOLATED FROM SAID WALL, SAID WALL INCLUDING FIRST AND SECOND PROTRUDING PORTIONS SURROUNDING SAID APERTURE AND EXTENDING TOWARD SAID COVER AND FORMING A CHANNEL THEREBETWEEN, SAID COVER INCLUDING FIRST AND SECOND PROTRUDING PORTIONS EXTENDING TOWARD SAID WALL AND FORMING A CHANNEL THEREBETWEEN WHEREIN THE FIRST PROTRUDING PORTION OF SAID WALL EXTENDS INTO THE CHANNEL BETWEEN THE FIRST AND SECOND PROTRUDING PORTIONS OF SAID COVER, AND THE SECOND PROTRUDING PORTION OF SAID COVER EXTENDS INTO THE CHANNEL BETWEEN THE FIRST AND SECOND PROTRUDING PORTIONS OF SAID WALL.
Claim 2
Dependent Claim
113 words
A RADIO FREQUENCY SHIELDING ARRANGEMENT COMPRISING: A WALL MEMBER HAVING AN APERTURE THEREIN, AND A REMOVABLE COVER ADJACENT SAID APERTURE COMPLETELY COVERING SAID APERTURE AND DIRECT CURRENT ISOLATED FROM SAID WALL, SAID WALL INCLUDING FIRST AND SECOND PROTRUDING PORTIONS SURROUNDING SAID APERTURE AND EXTENDING TOWARD SAID COVER AND FORMING A CHANNEL THEREBETWEEN, SAID COVER INCLUDING FIRST AND SECOND PROTRUDING PORTIONS EXTENDING TOWARD SAID WALL AND FORMING A CHANNEL THEREBETWEEN WHEREIN THE FIRST PROTRUDING PORTION OF SAID WALL EXTENDS INTO THE CHANNEL BETWEEN THE FIRST AND SECOND PROTRUDING PORTIONS OF SAID COVER, AND THE SECOND PROTRUDING PORTION OF SAID COVER EXTENDS INTO THE CHANNEL BETWEEN THE FIRST AND SECOND PROTRUDING PORTIONS OF SAID 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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |