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Class Information
Number: 369/171
Name: Dynamic information storage or retrieval > Specific detail of information handling portion of system > Mechanical modification or sensing of storage medium > Stylus holder or shield > With structure to interchange styli
Description: Subject matter having structure to select one of a plurality of styli for engagement with the storage medium.

Sub-classes under this class:

Class Number Class Name Patents
369/172 By replacement 10

Patents under this class:

Patent Number Title Of Patent Date Issued
4512009 Stylus for stereo pickups Apr. 16, 1985
4381105 Clamp Apr. 26, 1983
4140321 Phonograph cartridge replaceable stylus assembly Feb. 20, 1979
4114896 Phonographic pick-up cartridge Sep. 19, 1978
4089530 Phonographic stylus May. 16, 1978
4068850 Stylus unit for pick-ups and/or cutters Jan. 17, 1978
4067582 Stylus suspension Jan. 10, 1978
4065134 Needle assemblies for phonograph pickup cartridges Dec. 27, 1977
3975025 Pickup cartridge Aug. 17, 1976
3964751 Phonograph cartridge replaceable stylus assembly Jun. 22, 1976
3961797 Phonograph pickup cartridge stylus rod Jun. 8, 1976
3954273 Phonograph pickup cartridge May. 4, 1976
3943276 Record tracking pickup structure for a capacitive disc Mar. 9, 1976

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