FR494683A - Perfectionnements aux transmetteurs d'impulsions - Google Patents

Perfectionnements aux transmetteurs d'impulsions

Info

Publication number
FR494683A
FR494683A FR494683DA FR494683A FR 494683 A FR494683 A FR 494683A FR 494683D A FR494683D A FR 494683DA FR 494683 A FR494683 A FR 494683A
Authority
FR
France
Prior art keywords
pulse transmitters
transmitters
pulse
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
Other languages
English (en)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR494683A publication Critical patent/FR494683A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
    • C10G9/14—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils in pipes or coils with or without auxiliary means, e.g. digesters, soaking drums, expansion means
    • C10G9/18—Apparatus
    • C10G9/20—Tube furnaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Signal Processing (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
FR494683D 1917-12-24 1918-12-23 Perfectionnements aux transmetteurs d'impulsions Expired FR494683A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US494683XA 1936-04-30 1936-04-30

Publications (1)

Publication Number Publication Date
FR494683A true FR494683A (fr) 1919-09-16

Family

ID=21959979

Family Applications (1)

Application Number Title Priority Date Filing Date
FR494683D Expired FR494683A (fr) 1917-12-24 1918-12-23 Perfectionnements aux transmetteurs d'impulsions

Country Status (2)

Country Link
FR (1) FR494683A (fr)
GB (1) GB494683A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1255639B (de) * 1961-06-15 1967-12-07 Hermann C Schutt Dr Ing Ofen fuer industrielle Zwecke

Also Published As

Publication number Publication date
GB494683A (en) 1938-10-31

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