In the late 1930's, this saxophone company was the first to pioneer and patent an adjustable action for its horns. Instead of using cork to regulate its keywork, this company began to use adjustable feet. The length of these feet can be adjusted and locked to retain the regulation almost indefinately. They claimed that even the hardest playing could not throw off the adjustment.

What is the name of the company, the actual inventor of the action, the official name for the adjustable keywork, and the models of alto and tenor saxes that the keywork premiered on?

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