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Object Name: Mason jar
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Medium: Molded glass, wax or plastic, metal
Dimensions: Overall: 5 3/4 × 4 1/8 in. (14.6 × 10.5 cm)
Description: Canning or food storage jar.
Credit Line: Gift of Jim Picinich
Object Number: 2017.22.5
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Marks: “Atlas / E-Z / SEAL” embossed on front

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“Mason Jars” are a generic term for utilitarian glass food storage jars. Philadelphia tinsmith John Landis Mason patented one of the first threaded jars or bottles with a screw-type lid in 1858. Thereafter, numerous variations of durable glass food storage jars were produced by glass manufacturers across the United States, and referred to as “Mason” jars.