| http://www.w3.org/ns/prov#value | - & jar makers in satisfying this demand for glass containers, the creative juices of closure designers were unleashed.??? The thousands of different closure designs patented during the 19th century are a testament to that creativity, though most probably never made it into widespread manufacture (Lief 1965, Toulouse 1969a).??? This variety is illustrated later on this page with links to several doz
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