ELECTROSTATIC AND MECHANICAL AIR CLEANING DEVICES FOR HOME USE-NAMELY, PORTABLE ELECTROSTATIC AIR CLEANING DEVICES AND PORTABLE MECHANICAL FILTER AIR CLEANING DEVICES

Electrostatic Air Cleaners for Removing Allergens from the Air So as to Relieve Symptoms of Hay Fever, Asthma and Other Pollen Induced Ailments, and Parts and Components Thereof

AIR GAUGING APPARATUS FOR MEASUREMENT OR COMPARISON OF SIZE CHARACTERISTICS OF FIBERS OR THE LIKE