I googled the patent number and found the following info. The figures on the patent sketches looks slightly different than the piece. Patent number: US 3497806
2 pcs of Ceramic Channel Magnet , Chrome Plated, 3.5" Length x 1.5" Width x 0.46" thick with Two Mounting Slots 0.195"x0.25" Pull Force 60 lb Important Safety Warning! Disclaimer
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