TREA

Drilling head

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Information

  • Patent Grant
  • D334016
  • Patent Number
    D334,016
  • Date Filed
    Monday, October 22, 1990
    34 years ago
  • Date Issued
    Tuesday, March 16, 1993
    32 years ago
  • US Classifications
    Field of Search
    • US
    • D15 139
    • 175 195
    • 175 393
    • 277 31
    • 279 8
    • 285 16
    • 285 363
    • 384 558
    • 408 146
    • 408 181
    • 408 186
    • 408 239 A
    • Term of Grant
      14Years
Information
Abstract
Description
Claims
  • The ornamental design for a drilling head, as shown.
Priority Claims (1)
Number Date Country Kind
90-0920 Apr 1990 SEX
US Referenced Citations (3)
Number Name Date Kind
418903 Weiss Jan 1890
4558975 Hale Dec 1985
4950108 Roos Aug 1990