FR495809A - Improvements to reflectors used in telegraphy and wireless telephony - Google Patents

Improvements to reflectors used in telegraphy and wireless telephony

Info

Publication number
FR495809A
FR495809A FR495809A FR495809DA FR495809A FR 495809 A FR495809 A FR 495809A FR 495809 A FR495809 A FR 495809A FR 495809D A FR495809D A FR 495809DA FR 495809 A FR495809 A FR 495809A
Authority
FR
France
Prior art keywords
telegraphy
wireless telephony
reflectors used
reflectors
telephony
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR495809A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconis Wireless Telegraph Co Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Filing date
Publication date
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Application granted granted Critical
Publication of FR495809A publication Critical patent/FR495809A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
FR495809A 1919-02-15 Improvements to reflectors used in telegraphy and wireless telephony Expired FR495809A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL5476T

Publications (1)

Publication Number Publication Date
FR495809A true FR495809A (en) 1919-10-18

Family

ID=19750198

Family Applications (1)

Application Number Title Priority Date Filing Date
FR495809A Expired FR495809A (en) 1919-02-15 Improvements to reflectors used in telegraphy and wireless telephony

Country Status (2)

Country Link
FR (1) FR495809A (en)
NL (1) NL5476C (en)

Also Published As

Publication number Publication date
NL5476C (en)

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