US PATENT SUBCLASS 242 / 538.4
.~.~ Light occludent construction (e.g., light sensitive film holder)

Current as of: June, 1999
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242 /   HD   WINDING, TENSIONING, OR GUIDING

520  DF  CONVOLUTE WINDING OF MATERIAL {17}
538  DF  .~ With coiled supply {3}
538.4.~.~ Light occludent construction (e.g., light sensitive film holder)

DEFINITION

Classification: 242/538.4

Light occludent construction (e.g., light sensitive film holder):

(under subclass 538) Subject matter comprising an enclosure for each or both of the supply and take-up coils specifically fabricated to block out detrimental light rays.