Classifications

• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
  • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
  • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
  • B41L13/00—Stencilling apparatus for office or other commercial use
  • B41L13/04—Stencilling apparatus for office or other commercial use with curved or rotary stencil carriers
  • B41L13/08—Stencilling apparatus for office or other commercial use with curved or rotary stencil carriers with stencil carried by two or more cylinders, e.g. through the intermediary of endless bands
  • B41L13/10—Clips or clamps for securing stencils to stencil carriers
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
  • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
  • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Physics & Mathematics (AREA)
• Ceramic Engineering (AREA)
• Condensed Matter Physics & Semiconductors (AREA)
• General Physics & Mathematics (AREA)
• Computer Hardware Design (AREA)
• Multimedia (AREA)
• Amplifiers (AREA)
• Devices For Supply Of Signal Current (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=21811779

Family Applications (2)

Family Applications Before (1)

Country Status (6)

Families Citing this family (60)

Family Cites Families (4)

• 0
  • BE BE487709D patent/BE487709A/xx unknown
  • NL NL707009390A patent/NL145843B/xx unknown
  • NL NL89371D patent/NL89371C/xx active
• 1948
  • 1948-04-23 US US22854A patent/US2517960A/en not_active Expired - Lifetime
• 1949
  • 1949-03-02 CH CH275632D patent/CH275632A/de unknown
  • 1949-03-11 FR FR982822D patent/FR982822A/fr not_active Expired
  • 1949-04-22 GB GB10757/49A patent/GB694025A/en not_active Expired

Also Published As

Similar Documents