Portable telephone set

  • US 8,014,835 B2
  • Filed: 04/29/2003
  • Issued: 09/06/2011
  • Est. Priority Date: 05/07/2002
  • Status: Active Grant
First Claim
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1. A portable telephone set of slide type comprising a main casing, a movable casing, the two casings being slidably coupled and capable of being locked to each other, and a lock releasing means for releasing the lock, wherein:

  • the portable telephone set further comprises an illuminating means for illuminating the lock releasing means from the inner side, and further comprises a detecting means for detecting the advanced position of the main casing and the movable casing, a condition of the illuminating means being controlled according to whether the main casing and the movable casing have been retreated or advanced.

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