Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R11/00—Transducers of moving-armature or moving-core type
  • H04R11/06—Telephone receivers
• • 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
  • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
  • H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Electromagnetism (AREA)
• Acoustics & Sound (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10867374

Family Applications (1)

Country Status (2)

Families Citing this family (1)

• 0
  • BE BE491744D patent/BE491744A/xx unknown
• 1949
  • 1949-10-18 FR FR997693D patent/FR997693A/fr not_active Expired
• 1953
  • 1953-12-03 FR FR66033D patent/FR66033E/fr not_active Expired
• 1955
  • 1955-10-26 FR FR56119A patent/FR72709E/fr not_active Expired

Also Published As

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