US PATENT SUBCLASS 285 / FOR 120
.~ Inner to spaced outer tube coupling (285/138)

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

Internet Version by PATENTEC © 1999      Terms of Use


285 /   HD   PIPE JOINTS OR COUPLINGS

FOR 100  DF  SYSTEMS (285/120) {11}
FOR 120.~ Inner to spaced outer tube coupling (285/138) {2}
FOR 121  DF  .~.~> Radially compressed packing (285/139)
FOR 122  DF  .~.~> Suspended (e.g., oil well casing type) (285/140) {3}

DEFINITION

Classification: 285/FOR.120

Foreign art collection comprising means mounting an inner tube in spaced relation to an outer tube with inlet or outlet means claimed for the inner tube only.