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公开(公告)号:US09803872B1
公开(公告)日:2017-10-31
申请号:US15338314
申请日:2016-10-28
申请人: Bin Lu , Robert Brownstein
发明人: Bin Lu , Robert Brownstein
摘要: The invention is an automatic heat-source shut-off system for cooking stoves. When a burner's flame is turned on, or an electric stove's heating element is turned on, the invention begins a timed sequence that upon expiring causes the heat-source control shaft to be returned to the heat-off position.
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公开(公告)号:US10249216B1
公开(公告)日:2019-04-02
申请号:US15869483
申请日:2018-01-12
申请人: Robert Brownstein
发明人: Robert Brownstein
摘要: A Morse code training tool and use method for learning how to copy and send Morse coded messages.
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