Assignee
DIEDRICH DRILL INC
US·3 granted patents·32 citations·filing 2002–2003
Top patents by PatentIndex Score
3 records- 0157US6739410B2Sonic drill headDIEDRICH DRILL INC·Filed 2002·Granted May 25, 2004·19 cites·38 claims
- 0249US7182155B2Locking split barrel sampler and soil sampling systemDIEDRICH DRILL INC·Filed 2003·Granted Feb 27, 2007·13 cites·32 claims
- 0333US7182152B2Sampling isolatorDIEDRICH DRILL INC·Filed 2003·Granted Feb 27, 2007·0 cites·17 claims
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