Patent US3121847A successfully refreshed from Google Patents.
US3121847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency selective distribution device
Assignee: ARF Products Inc
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Filing: 1959-04-21
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Granted: 1964-02-18
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Expires: 1979-04-21
Abstract
No abstract record available.
Inventors
- 👤 John J Pakan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:40
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213; H01P1/2133
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A SIGNAL DISTRIBUTION SYSTEM COMPRISING A DISTRIBUTION LINE HAVING ONE END ADAPTED TO BE CONNECTED TO A SOURCE OF RADIO FREQUENCY SIGNALS, SAID DISTRIBUTION LINE COMPRISING AN ELONGATED ROD OF ELECTRICALLY INSULATING MATERIAL PROVIDED WITH A GROOVE EXTENDING ABOUT THE ROD AND ALONG THE ROD, AN ELECTRICALLY CONDUCTING STRIP DISPOSED IN THE GROOVE, AND A SURFACE DEFINING MEMBER DISPOSED ABOUT THE ROD AND SPACED FROM THE STRIP, SAID MEMBER BEING PROVIDED WITH A PLURALITY OF APERTURES DISPOSED ALONG THE LENGTH OF THE ROD AND CONFRONTING THE STRIP, A COUPLER MOUNTED TO THE MEMBER CONFRONTING EACH OF THE APERTURES FOR COUPLING RADIO-FREQUENCY ENERGY TO A TRANSMISSION DEVICE COMPRISING A HOLLOW ELECTRICALLY CONDUCTING SHELL MOUNTED IN ABUTMENT WITH THE MEMBER OF THE DISTRIBUTION LINE AND HAVING AN APERTURE CONFRONTING THE APERTURE OF THE DISTRIBUTION LINE, AND MEANS TO TERMINATE THE END OF THE DISTRIBUTION LINE OPPOSITE THE SOURCE OF RADIO FREQUENCY SIGNALS HAVING AN IMPEDANCE APPROXI-
Claim 2
Dependent Claim
154 words
A SIGNAL DISTRIBUTION SYSTEM COMPRISING A DISTRIBUTION LINE HAVING ONE END ADAPTED TO BE CONNECTED TO A SOURCE OF RADIO FREQUENCY SIGNALS, SAID DISTRIBUTION LINE COMPRISING AN ELONGATED ROD OF ELECTRICALLY INSULATING MATERIAL PROVIDED WITH A GROOVE EXTENDING ABOUT THE ROD AND ALONG THE ROD, AN ELECTRICALLY CONDUCTING STRIP DISPOSED IN THE GROOVE, AND A SURFACE DEFINING MEMBER DISPOSED ABOUT THE ROD AND SPACED FROM THE STRIP, SAID MEMBER BEING PROVIDED WITH A PLURALITY OF APERTURES DISPOSED ALONG THE LENGTH OF THE ROD AND CONFRONTING THE STRIP, A COUPLER MOUNTED TO THE MEMBER CONFRONTING EACH OF THE APERTURES FOR COUPLING RADIO-FREQUENCY ENERGY TO A TRANSMISSION DEVICE COMPRISING A HOLLOW ELECTRICALLY CONDUCTING SHELL MOUNTED IN ABUTMENT WITH THE MEMBER OF THE DISTRIBUTION LINE AND HAVING AN APERTURE CONFRONTING THE APERTURE OF THE DISTRIBUTION LINE, AND MEANS TO TERMINATE THE END OF THE DISTRIBUTION LINE OPPOSITE THE SOURCE OF RADIO FREQUENCY SIGNALS HAVING AN IMPEDANCE APPROXI-
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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |