Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
  • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
  • B43L23/00—Sharpeners for pencils or leads
  • B43L23/08—Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q3/00—Selecting arrangements
  • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite

Landscapes

• Physics & Mathematics (AREA)
• Astronomy & Astrophysics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Drawing Aids And Blackboards (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=9843425

Family Applications (2)

Family Applications Before (1)

Country Status (5)

Families Citing this family (1)

• 0
  • NL NL22593D patent/NL22593C/xx active
  • BE BE349613D patent/BE349613A/xx unknown
  • NL NL40426D patent/NL40426C/xx active
• 1928
  • 1928-03-07 CH CH132054D patent/CH132054A/de unknown
  • 1928-03-15 GB GB797928A patent/GB294091A/en not_active Expired
  • 1928-03-15 FR FR651420D patent/FR651420A/fr not_active Expired

Also Published As

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