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08-22-2015, 05:53 PM
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Rhodri Marsden?s Interesting Objects: The liquid soap dispenser
Rhodri Marsden?s Interesting Objects: The liquid soap dispenser
 It was 150 years ago today that Mr William Sheppard received the US patent for liquid soap. By mixing one part common soap to 100 parts ammonia, he created a glute**us substance which, he predicted, would be "valuable for...
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