US PATENT SUBCLASS 369 / 275.5
.~.~ Protection (e.g., preventing damage to medium, etc.)

Current as of: June, 1999
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369 /   HD   DYNAMIC INFORMATION STORAGE OR RETRIEVAL

272  DF  STORAGE MEDIUM STRUCTURE {11}
275.1  DF  .~ Optical track structure (e.g., phase or diffracting structure, etc.) {4}
275.5.~.~ Protection (e.g., preventing damage to medium, etc.)

DEFINITION

Classification: 369/275.5

Protection (e.g., preventing damage to medium, etc.):

(under subclass 275.1) Subject matter wherein some means of guarding is provided to prevent some undesired effect.

(1) Note. Examples include a protective cover or structure to prevent scratches, a protective layer to prevent undesired thermal effect or chemical reaction or unwanted optical or recording effects, or an adhesive layer to prevent peeling.