US PATENT SUBCLASS 128 / 837
.~.~ Diaphragm

Current as of: June, 1999
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128 /   HD   SURGERY

830  DF  FEMALE REPRODUCTORY TRACT SHIELDS, SUPPORTS, OR BIRTH CONTROL DEVICES (E.G., PESSARIES, CONTRACEPTIVE DEVICES) {3}
834  DF  .~ Pessaries {4}
837.~.~ Diaphragm {1}
838  DF  .~.~.~> Inserters and removers

DEFINITION

Classification: 128/837

Diaphragms:

(under subclass 834) Subject matter comprising a thin flexible disk of natural or synthetic rubber or similar resilient material which is inserted into the vagina to cover the uterine opening or cervix.