US PATENT SUBCLASS 33 / 121
AREA INTEGRATORS


Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

121AREA INTEGRATORS {3}
122  DF  .~> Planimeters
123  DF  .~> Electrical
124  DF  .~> Rolling contact


DEFINITION

Classification: 33/121

(under the class definition) Subject matter comprising integrating means for determining superficial extent directly.

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1, for planimeter type calculators for determining geometrical properties other than area, such as mean radius, mean square foot radius, and moment of inertia of area.

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356, Optics: Measuring and Testing,

379+, for optical area or volume integrators.