TREA

Telephone headset amplifier unit

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Information

  • Patent Grant
  • D412904
  • Patent Number
    D412,904
  • Date Filed
    Thursday, August 13, 1998
    26 years ago
  • Date Issued
    Tuesday, August 17, 1999
    25 years ago
  • US Classifications
    Field of Search
    • US
    • D14 137
    • D14 251
    • D14 138
    • D14 253
    • D14 148
    • D14 147
    • D14 149-151
    • D14 140-142
    • D14 240
    • D14 241
    • D14 107
    • D14 155
    • D14 159
    • D14 252
    • D14 243
    • 379 433-436
    • 379 419
    • 379 420
    • 379 428
    • 379 440
    • 379 430
    • 379 446
    • 379 447
    • 379 454
    • 379 455
    • 379 395
    • D13 107
    • D13 108
    • 320 110
    • 320 113
    • 320 114
    • 320 115
    • D19 87
    • 455 90
  • International Classifications
    • 1403
    • Term of Grant
      14Years
Information
Abstract
Description
Claims
  • The ornamental design for telephone headset amplifier unit, as shown and described.
US Referenced Citations (18)
Number Name Date Kind
D243091 Breger Jan 1977
D262120 Halm Dec 1981
D272077 Halm Jan 1984
D278055 Vajdathy Mar 1985
D307587 Marcune May 1990
D327068 Hampf et al. Jun 1992
D335227 Lapsker et al. May 1993
D372473 Bungardt Aug 1996
D391928 Kondo et al. Mar 1998
D391931 Iino Mar 1998
D393451 Faranda et al. Apr 1998
D394645 Inue May 1998
D394654 Copeland et al. May 1998
D405093 Sawhney et al. Feb 1999
4930148 Lee May 1990
5099514 Acree Mar 1992
5608797 Larsen et al. Mar 1997
5678202 Filimon et al. Oct 1997