Key matrix

Information

  • Patent Grant
  • D421021
  • Patent Number
    D421,021
  • Date Filed
    Friday, February 12, 1999
    25 years ago
  • Date Issued
    Tuesday, February 22, 2000
    24 years ago
  • US Classifications
    Field of Search
    • US
    • D14 137
    • D14 218
    • D14 138
    • D14 144
    • D14 147-148
    • D14 247-249
    • D14 140-142
    • D14 250
    • D14 240
    • D14 100
    • D14 115
    • 379 433
    • 379 434
    • 379 419
    • 379 420
    • 379 428
    • 379 440
    • 379 368
    • 455 550-575
    • 455 90
    • D13 168
    • D18 2
    • D18 7
  • International Classifications
    • 1403
    • Term of Grant
      14Years
Abstract
Description
Claims
  • The ornamental design for a "key matrix", as shown and described.
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