US PATENT SUBCLASS 49 / 43
.~ With speed regulator

Current as of: June, 1999
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49 /   HD   MOVABLE OR REMOVABLE CLOSURES

42  DF  PLURAL WINGS RADIATE FROM COMMON PIVOT; I.E., REVOLVING {3}
43.~ With speed regulator

DEFINITION

Classification: 49/43

(under subclass 42) Device provided with means to govern or control the rate of revolution.

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46+, for revolving closures having a means to limit the rotation to incremental steps, including means to slow down the closure just before a stop position.

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188, Brakes,

180+, for speed responsive to regulators, per se.