[n: For Record Carriers] {g11b 3/58a1} Patents (Class G9B/3.086)

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[n: using means contacting the record carrier] {g11b 3/58a1a} (Class G9B/3.087)
[n: using means not contacting the record carrier] {g11b 3/58a1b} (Class G9B/3.09)

There are no patents to show for this class.