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PCE
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DIFF Subgroup
A61B 3/032

Devices for presenting test symbols or characters, e.g. test chart projectors (A61B3/036 takes precedence)

Introduced: January 1990

Title

Titles differ between systems:

IPC: Devices for presenting test symbols or characters, e.g. test chart projectors

CPC: Devices for presenting test symbols or characters, e.g. test chart projectors (A61B3/036 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Apparatus for testing the eyes; Instruments for examining the eyes > Subjective types, i.e. testing apparatus requiring the active assistance of the patient > for testing visual acuity; for determination of refraction, e.g. phoropters > Devices for presenting test symbols or characters, e.g. test chart projectors

CPC:

Apparatus for testing the eyes; Instruments for examining the eyes (eye inspection using ultrasonic, sonic or infrasonic waves A61B8/10) > Subjective types, i.e. testing apparatus requiring the active assistance of the patient > for testing visual acuity; for determination of refraction, e.g. phoropters > Devices for presenting test symbols or characters, e.g. test chart projectors (A61B3/036 takes precedence)

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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