Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M1/00—Substation equipment, e.g. for use by subscribers
  • H04M1/02—Constructional features of telephone sets
  • H04M1/21—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
  • H04M1/215—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads by non-intrusive coupling means, e.g. acoustic couplers

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Telephone Set Structure (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4485768

Family Applications (1)

Country Status (2)

• 0
  • BE BE505303D patent/BE505303A/xx unknown
• 1950
  • 1950-08-18 CH CH287406D patent/CH287406A/de unknown

Also Published As

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