US PATENT SUBCLASS 73 / 864.16
.~.~.~.~ Piston and cylinder

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

863  DF  SAMPLER, SAMPLE HANDLING, ETC. {11}
864  DF  .~ Capture device {9}
864.01  DF  .~.~ Pipette or cannula {7}
864.11  DF  .~.~.~ With suction applying and liquid discharge means {5}
864.16.~.~.~.~ Piston and cylinder {2}
864.17  DF  .~.~.~.~.~> Plural
864.18  DF  .~.~.~.~.~> Plural or adjustable limit stops

DEFINITION

Classification: 73/864.16

Piston and cylinder:

(under subclass 864.11) Subject matter wherein the suction applying and liquid discharge means is a sliding piece closely fitting within a tubular vessel to form an expansible chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

864.13, for similar subject matter wherein the cylinder is a pipette.