US PATENT SUBCLASS 277 / 405
.~.~.~ Ceramic

Current as of: June, 1999
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277 /   HD   SEAL FOR A JOINT OR JUNCTURE

345  DF  SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL) {10}
358  DF  .~ Relatively rotatable radially extending sealing face member (e.g., face, mechanical, etc.) {9}
404  DF  .~.~ Made of particular material {3}
405.~.~.~ Ceramic

DEFINITION

Classification: 277/405

Ceramic:

(under subclass 404) Particular material wherein the composition or substance is a fired, clay-containing composition (e.g., porcelain, earthenware, etc.), glass, or refractory composition (e.g., inorganic oxides, carbides, etc.).