Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M3/00—Automatic or semi-automatic exchanges
  • H04M3/42—Systems providing special services or facilities to subscribers
  • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
  • A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
  • A23L5/40—Colouring or decolouring of foods
  • A23L5/42—Addition of dyes or pigments, e.g. in combination with optical brighteners

Landscapes

• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Health & Medical Sciences (AREA)
• Nutrition Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Food Science & Technology (AREA)
• Polymers & Plastics (AREA)
• Interconnected Communication Systems, Intercoms, And Interphones (AREA)
• Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6607817

Family Applications (2)

Family Applications Before (1)

Country Status (3)

• 0
  • NL NL51701D patent/NL51701C/xx active
  • NL NL32889D patent/NL32889C/xx active
• 1929
  • 1929-05-18 DE DES91776D patent/DE624051C/de not_active Expired
• 1930
  • 1930-05-17 FR FR696980D patent/FR696980A/fr not_active Expired
  • 1930-10-13 FR FR39382D patent/FR39382E/fr not_active Expired
  • 1930-12-09 DE DE1930625010D patent/DE625010C/de not_active Expired

Also Published As

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