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US3201723A
Expired / Lapsed
US
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Corrugated waveguides
Assignee: Hackethal Draht Kabel Werke AG
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Filing: 1963-05-14
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Granted: 1965-08-17
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Expires: 1983-05-14
Abstract
No abstract record available.
Inventors
- 👤 Martin Helmut
- 👤 Mohring Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:30
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/12; H01P3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A WAVEGUIDE COMPRISING A TUBULAR MEMBER FOR TRANSMITTING POLARIZED ELECTROMAGNETIC WAVES HAVING AXIALLY RELATED FIRST AND SECOND SECTIONS, EACH OF SAID SECTIONS BEING HELICALLY CORRUGATED, THE CORRUGATIONS IN THE FIRST SECTION HAVING ONE SENSE OF ROTATION FOR ROTATING THE PLANE OF POLARIZATION OF SAID ELECTROMAGNETIC WAVES MOVING THROUGH SAID FIRST SECTION IN ONE DIRECTION, THE CORRUGATIONS OF THE SECOND SECTION HAVING A SENSE OF ROTATION OPPOSITE
Claim 2
Dependent Claim
66 words
A WAVEGUIDE COMPRISING A TUBULAR MEMBER FOR TRANSMITTING POLARIZED ELECTROMAGNETIC WAVES HAVING AXIALLY RELATED FIRST AND SECOND SECTIONS, EACH OF SAID SECTIONS BEING HELICALLY CORRUGATED, THE CORRUGATIONS IN THE FIRST SECTION HAVING ONE SENSE OF ROTATION FOR ROTATING THE PLANE OF POLARIZATION OF SAID ELECTROMAGNETIC WAVES MOVING THROUGH SAID FIRST SECTION IN ONE DIRECTION, THE CORRUGATIONS OF THE SECOND SECTION HAVING A SENSE OF ROTATION OPPOSITE
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |