Patent US5601656A successfully refreshed from Google Patents.
Patent US3078428A successfully refreshed from Google Patents.
US3078428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spurious mode suppressing wave guide
Assignee: AT&T Inc
•
Filing: 1959-09-30
•
Granted: 1963-02-19
•
Expires: 1979-09-30
Abstract
No abstract record available.
Inventors
- 👤 Stewart E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:23
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/12; H01P3/13; H01P1/00; H01P1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A TRANSMISSION PATH FOR ELECTROMAGNETIC WAVE ENERGY IN THE CIRCULAR ELECTRIC WAVE MODE COMPRISING A SECTION OF CONTINUOUSLY CONDUCTIVELY BOUNDED HOLLOW PIPE WAVE GUIDE OF CIRCULAR TRANSVERSE CROSS SECTION WITH A RADIUS A, A FIRST HOLLOW LINER OF ELECTRICALLY LOSSY MATERIAL WITH A FIRST RADIAL THICKNESS DISPOSED WITHIN SAID GUIDE WITH THE OUTER SURFACE OF SAID LINER CONTIGUOUS TO THE INNER SURFACE OF SAID GUIDE, AND A SECOND HOLLOW LINER OF LOW LOSS MATERIAL WITH A SECOND RADIAL THICKNESS DISPOSED WITHIN SAID GUIDE WITH THE OUTER SURFACE OF SAID SECOND LINER CONTIGU-
Claim 2
Dependent Claim
92 words
A TRANSMISSION PATH FOR ELECTROMAGNETIC WAVE ENERGY IN THE CIRCULAR ELECTRIC WAVE MODE COMPRISING A SECTION OF CONTINUOUSLY CONDUCTIVELY BOUNDED HOLLOW PIPE WAVE GUIDE OF CIRCULAR TRANSVERSE CROSS SECTION WITH A RADIUS A, A FIRST HOLLOW LINER OF ELECTRICALLY LOSSY MATERIAL WITH A FIRST RADIAL THICKNESS DISPOSED WITHIN SAID GUIDE WITH THE OUTER SURFACE OF SAID LINER CONTIGUOUS TO THE INNER SURFACE OF SAID GUIDE, AND A SECOND HOLLOW LINER OF LOW LOSS MATERIAL WITH A SECOND RADIAL THICKNESS DISPOSED WITHIN SAID GUIDE WITH THE OUTER SURFACE OF SAID SECOND LINER CONTIGU-
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |