The design and marketing of a new fail-safe device for gas appliances
The mercury flame failure device (F.F.D.) has now been in existence for approximately 30 years and in the United States, Canada and Britain there is now estimated to be a field population of 42,000,000 of these controls, with a current production rate of 2,350,000 units per year. Recently several pr...
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University of Bath
1981
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| Online Access: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.256857 |