FR331973A - Improvements in electric telegraphy apparatus - Google Patents

Improvements in electric telegraphy apparatus

Info

Publication number
FR331973A
FR331973A FR331973A FR331973DA FR331973A FR 331973 A FR331973 A FR 331973A FR 331973 A FR331973 A FR 331973A FR 331973D A FR331973D A FR 331973DA FR 331973 A FR331973 A FR 331973A
Authority
FR
France
Prior art keywords
electric telegraphy
telegraphy apparatus
electric
telegraphy
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
FR331973A
Other languages
French (fr)
Inventor
Agazio Falcone
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.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR331973A publication Critical patent/FR331973A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/04—Apparatus or circuits at the transmitting end
    • H04L15/06—Apparatus or circuits at the transmitting end with a restricted number of keys, e.g. separate key for each type of code element
    • H04L15/08—Apparatus or circuits at the transmitting end with a restricted number of keys, e.g. separate key for each type of code element with a single key which transmits dots in one position and dashes in a second position

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
FR331973A 1903-04-23 Improvements in electric telegraphy apparatus Expired FR331973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE152024T

Publications (1)

Publication Number Publication Date
FR331973A true FR331973A (en) 1903-10-10

Family

ID=5674821

Family Applications (1)

Application Number Title Priority Date Filing Date
FR331973A Expired FR331973A (en) 1903-04-23 Improvements in electric telegraphy apparatus

Country Status (2)

Country Link
DE (1) DE152024C (en)
FR (1) FR331973A (en)

Also Published As

Publication number Publication date
DE152024C (en)

Similar Documents

Publication Publication Date Title
DK6215C (en) Electric Telegraph Apparatus.
FR332296A (en) Electric counter-warning device
GB190307827A (en) Improvements in Electric Switch Apparatus
FR354951A (en) Improvements in telegraphy apparatus
FR344110A (en) Armature for polarized devices operating with alternating current
CA85881A (en) Electric telegraph apparatus
GB190311706A (en) Improvements in Electrical Switch Apparatus
FR359440A (en) Improvements in electrical adjustment devices
FR2367E (en) Electric current limiting device
FR323096A (en) An electric current limiting device
FR337384A (en) Advanced electric lighter
FR1839E (en) Electric equalizer coupler
CA85339A (en) Electric translating apparatus
FR329248A (en) Automatic telegraphy apparatus
FR328596A (en) Improvements to rheostats and electric heaters
FR343207A (en) Device for regulating the electric current
FR336239A (en) Electric switch
FR329459A (en) Electric switch
FR334371A (en) Electric meter
FR332000A (en) Electric meter
FR3348E (en) Electric meter
FR3222E (en) Electric meter
CH28381A (en) Electric switch
CH30349A (en) Electric switch
FR321077A (en) Electric secret switch