Assignee
JOHNSON RONALD D
4 granted patents·169 citations·filing 1978–1992
Top patents by PatentIndex Score
4 records- 0198US4258953ADry bulk hopper having an improved slope sheetJOHNSON RONALD D·Filed 1978·Granted Mar 31, 1981·126 cites·5 claims
- 0283USD355702SFilter for attachment to an in-ear hearing aid to prevent the migration of ear wax into the hearing aidJOHNSON RONALD D·Filed 1992·Granted Feb 21, 1995·24 cites·1 claims
- 0340US5100365AGame support rackJOHNSON RONALD D·Filed 1991·Granted Mar 31, 1992·10 cites·2 claims
- 0440US4199282AUnloading system having vibratory bin discharge structureJOHNSON RONALD D·Filed 1978·Granted Apr 22, 1980·9 cites·2 claims
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