TREA

Spade-type boring bit

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Information

  • Patent Grant
  • D372485
  • Patent Number
    D372,485
  • Date Filed
    Friday, December 30, 1994
    31 years ago
  • Date Issued
    Tuesday, August 6, 1996
    29 years ago
Information
Abstract
Description
Claims
  • The ornamental design for a spade-type boring bit, as shown and described.
US Referenced Citations (28)
Number Name Date Kind
D240263 Southall Jun 1976
D278065 Sydlowski et al. Mar 1985
2332295 Bouchal Oct 1943
2627292 Kronwall Feb 1953
2681673 Mackey Jun 1954
2692627 Stearns Oct 1954
2782824 Robinson Feb 1957
2794468 Huxtable Jun 1957
2883888 Stewart Apr 1959
2962066 Deliso Nov 1960
3920350 Southall Nov 1975
3997279 Porter Dec 1976
4050841 Hildebrandt Sep 1977
4286904 Porter et al. Sep 1981
4625593 Schmotzer Dec 1986
4682917 Williams, III et al. Jul 1987
4753558 Jansson Jun 1988
4950111 Thomas Aug 1990
5056967 Hageman Oct 1991
5061127 Thomas Oct 1991
5099933 Schimke et al. Mar 1992
5145018 Schimke et al. Sep 1992
5149234 Durfee, Jr. Sep 1992
5184689 Sheirer et al. Feb 1993
5193951 Schimke Mar 1993
5221166 Bothum Jun 1993
5286143 Schimke Feb 1994
5291806 Bothum Mar 1994
Foreign Referenced Citations (3)
Number Date Country
0118806 Sep 1984 EPX
2130935 Jun 1984 GBX
2271948 Apr 1994 GBX