8 public-domain matches

Air Filters

Cover of Air cleaners for motor vehicles

Air cleaners for motor vehicles

A. H. Hoffman

Cover of IS 14875: Compressed Air Filters - Evaluation Parameters

IS 14875: Compressed Air Filters - Evaluation Parameters

Bureau of Indian Standards

Cover of IS 7613: Method of testing panel type air filters for air conditioning and ventilation purposes

IS 7613: Method of testing panel type air filters for air conditioning and ventilation purposes

Bureau of Indian Standards

Cover of Staynew filters for air, other gases, liquids, chemicals, special applications.

Staynew filters for air, other gases, liquids, chemicals, special applications.

Dollinger Corporation

Cover of ES 6017-5: High Efficiency Particulate Air Filters (HEPA And ULPA) Part 5: Determining The Efficiency Of Filter Element

ES 6017-5: High Efficiency Particulate Air Filters (HEPA And ULPA) Part 5: Determining The Efficiency Of Filter Element

Egyptian Organization for Standardization and Quality (EOS)

Cover of The successful application of charcoal air-filters to the ventilation and disinfection of sewers

The successful application of charcoal air-filters to the ventilation and disinfection of sewers

John Stenhouse

Cover of Roughing It

Roughing It

Mark Twain

Wratten Light Filters

Wratten Light Filters

Kodak Eastman Company