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Between 18, many other patents were issued for Mason jar improvements and closures.

Letters of patent issued to Mason on May 10, 1870, for improvements to his fruit-canning jar was determined to be invalid as a result of a patent infringement case brought before the Southern District of New York on June 11, 1874.

The bail-style jars are still widely used in Western Europe, particularly France and Italy, where the two largest manufacturers (France's Le Parfait and Italy's Bormioli Rocco) produce the Le Parfait and Fido brands, respectively.

While bail-type jars are widely available in the United States, they are generally marketed there exclusively for dry storage and only rarely used for home canning.

An improper or failed seal or microbial growth will cause the dome to pop upward.

The lid is placed on top of the jar with the integral rubber seal resting on the rim.One of the more popular styles of closures for the Mason jar was the wire bail.The closure consists of a metal wire arrangement with a lever that applies leverage to a glass lid when pivoted downward against the side of the jar, clamping it down over a separate rubber O ring.On January 5, 1875, Charles de Quillfeldt of New York City invented a wire-bail closure known as the Lightning closure.Within a short time he sold the patent rights to several individuals, including Henry Putnam and Karl Hutter. De Quillfeldt used the term "Lightning" to refer to the sealing method, but the closure's popular use on fruit jars led to the name, Lightning fruit jar.

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