Carson gained control of the show's tapes--except for the episodes that aired from 1962 and 1972, which were erased to save on storage costs--from General Electric 's NBC in a host of unprecedented negotiations over the course of his 30-year tenure.

FORBES: Magazine Article

Carson gained control of the show's tapes--except for the episodes that aired from 1962 and 1972, which were erased to save on storage costs--from General Electric 's (nyse: GE - news - people ) NBC in a host of unprecedented negotiations over the course of his 30-year tenure.

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However with the introduction of lighter weight and more flexible plastic substrate magnetic tapes, combined with a vacuum column to control the tension that the magnetic tape experiences during use, the IBM 726 was a prototype of the modern digital tape recording system.

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Products include tapes, abrasives, adhesives, filtration systems, energy control products, closures and a variety of specialty materials.

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