(under the class definition) Devices, including means connected with sashes, frames or panels for holding them in balanced or adjusted position.
(1) Note. In the following indented subclass, "sashes" is used generically.
SEE OR SEARCH CLASS
49, Movable or Removable Closures,
445+, for a counterbalance combined with means, e.g., bearing, to guide the movement of the closure or a counterbalance interrelated with two or more closures, and see the search notes thereto for the loci of other closure counterbalances.
248, Supports,
325, 329-331 and 334.1+ for adjustable or balanced supports and subclass 364 for counterbalance weights.
