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.
The court ruled that Mason's delay in protecting his patent indicated he had abandoned his invention in the intervening years between 18 and had forfeited his patent.
The court's decision allowed other manufacturers to patent, produce, and sell glass jars for canning.
By far the most popular and longest used form of closure for the glass canning jar was a zinc screw-on cap, the precursor to today's screw-on lids.
It usually had a milk-glass liner, but some of the earliest lids may have had transparent glass liners.
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.
Most metal lids used today are slightly domed to serve as a seal status indicator.
The vacuum in a properly sealed mason jar pulls the lid down to create a concave-shaped dome.
The stopper or lid was typically made from metal, porcelain, or ceramic, while a rubber gasket was used to seal the container. The sealing surface on the jar was a "shelf" that supported the lower edge of the lid.
Putnam modified de Quillfeldt's design so that the lid was secured by centering the wire bail between two raised dots or in a groove along the lid's center. A rubber gasket between the shelf and the bottom surface of the lid formed a secure seal when the wire closure was tightened.
A band is screwed loosely over the lid, allowing air and steam to escape.