Classifications

• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03G—CONTROL OF AMPLIFICATION
  • H03G3/00—Gain control in amplifiers or frequency changers
  • H03G3/20—Automatic control
  • H03G3/22—Automatic control in amplifiers having discharge tubes
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
  • A63F7/00—Indoor games using small moving playing bodies, e.g. balls, discs or blocks
  • A63F7/06—Games simulating outdoor ball games, e.g. hockey or football
  • A63F7/068—Games simulating outdoor ball games, e.g. hockey or football using magnetic power
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
  • H03F3/46—Reflex amplifiers
  • H03F3/48—Reflex amplifiers with tubes only

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Multimedia (AREA)
• Superheterodyne Receivers (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22492057

Family Applications (2)

Family Applications Before (1)

Country Status (4)

Families Citing this family (1)

• 0
  • BE BE427895D patent/BE427895A/xx unknown
  • NL NL54188D patent/NL54188C/xx active
  • BE BE427395D patent/BE427395A/xx unknown
• 1937
  • 1937-05-04 US US140619A patent/US2168193A/en not_active Expired - Lifetime
• 1938
  • 1938-05-03 FR FR837485D patent/FR837485A/fr not_active Expired

Also Published As

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