US PATENT SUBCLASS 116 / 150
.~ Swinging
Current as of: June, 1999
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DEFINITION
Classification: 116/150
(under subclass 148) Devices in which the bell is so hung as to swing freely upon an axis or from a single point of suspension. The clapper is usually inside the bell and is also pivoted to swing.
(1) Note. Bells on spiral springs are here included.
