Assignee
HOLDREN BROTHERS INC
3 granted patents·22 citations·filing 1978–1999
Top patents by PatentIndex Score
3 records- 0153US4198186ASilo dig out toolHOLDREN BROTHERS INC·Filed 1978·Granted Apr 15, 1980·16 cites·7 claims
- 0231USD293812STank cleaning spray headHOLDREN BROTHERS INC·Filed 1985·Granted Jan 19, 1988·5 cites·1 claims
- 0310US6199917B1Twist pinHOLDREN BROTHERS INC·Filed 1999·Granted Mar 13, 2001·1 cites·14 claims
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