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Patent Searching and Data


Document Type and Number:
United States Patent US3123157
Kind Code:
A
Publication Date:
March 03, 1964
Export Citation:
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Primary Class:
175/58
Other Classes:
166/319, 175/312
International Classes:
E21B27/00; E21B49/02; E21B27/00; E21B49/00
Domestic Patent References:
0664902A
1445575AMeans for bailing detritus from a well bore
1502622AProspecting or well-drilling device
2332267ACutting collector
2613916ASampling sub with removable cutting collector
2874781ATool for removing foreign matter from a well bore
2898086AMethod of drilling
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