Image:Kitchen-rudder-us-patent-489509.gif
{{Information
| description = Kitchen rudder
| source = from http://patimg2.uspto.gov/.piw?docid=US004895093&SectionNum=2&IDKey=353D33C6DFC8&HomeUrl=http://www.uspto.gov/patft US Patent 489509
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{{PD-US-patent}}
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