Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
  • H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
  • H04Q5/14—Signalling by pulses
  • H04Q5/16—Signalling by pulses by predetermined number of pulses
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/02—Anionic compounds
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Computer Networks & Wireless Communication (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6287008

Family Applications (1)

Country Status (4)

Cited By (1)

• 0
  • NL NL213449D patent/NL213449A/xx unknown
  • BE BE554715D patent/BE554715A/xx unknown
  • NL NL97957D patent/NL97957C/xx active
• 1942
  • 1942-10-28 CH CH231156D patent/CH231156A/de unknown
• 1957
  • 1957-01-09 CH CH354197D patent/CH354197A/de unknown
  • 1957-02-02 FR FR1168546D patent/FR1168546A/fr not_active Expired

Also Published As

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