Assignee
HACKMACK ALFRED
DE·5 granted patents·71 citations·filing 1983–1990
Top patents by PatentIndex Score
5 records- 0161US4803789AMilling deviceHACKMACK ALFRED·Filed 1987·Granted Feb 14, 1989·25 cites·20 claims
- 0258US4861199ASlit trencherHACKMACK ALFRED·Filed 1987·Granted Aug 29, 1989·17 cites·18 claims
- 0355US4761038ASurface working accessoryHACKMACK ALFRED·Filed 1983·Granted Aug 2, 1988·11 cites·14 claims
- 0448US4852946ASurface working accessory and methodHACKMACK ALFRED·Filed 1987·Granted Aug 1, 1989·10 cites·21 claims
- 0534US5214866AContinual digging, transport and loading accessory for earth or material moving equipmentHACKMACK ALFRED·Filed 1990·Granted Jun 1, 1993·8 cites·36 claims
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