US PATENT SUBCLASS 505 / 171
.~.~ Recording by magnetism, magnetic record carriers, or recording head arrangements

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


505 /   HD   SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS

150  DF  HIGH TEMPERATURE (Tc GREATER THAN 30 K) DEVICES, SYSTEMS, APPARATUS, COM- PONENTS, OR STOCK, OR PROCESSES OF USING {26}
170  DF  .~ Information processing (e.g., logic circuits, computer, etc.) or information storage or retrieval system, device, or component (i.e., both dynamic and static) {1}
171.~.~ Recording by magnetism, magnetic record carriers, or recording head arrangements

DEFINITION

Classification: 505/171

Recording by magnetism, magnetic record carriers, or recording head arrangements:

(under subclass 170) Device or system that records data utilizing magnetism, record carriers having thereon magnetic media utilized for storage or retrieval of information, or read or write head arrangements for magnetically recording.

SEE OR SEARCH CLASS

346, Recorders, particularly

74.5, for magnetos:graphic head arrangements for recording magnetic field pattern in pictorial or s:graphic form on a magnetic medium for visible display, as by development, toning, or other techniques.

360, Dynamic Magnetic Information Storage or Retrieval.