7 electrical and/or mechanical room privacy indicator apparatuses, systems, and components, including, but not limited to, control clocks and timing devices
9 electrical and/or mechanical room privacy indicator apparatuses, systems, and components, including, but not limited to, control clocks and timing devices
14 electrical and/or mechanical room privacy indicator apparatuses, systems, and components, including, but not limited to, control clocks and timing devices
20 electrical and/or mechanical room privacy indicator apparatuses, systems, and components, including, but not limited to, control clocks and timing devices