Despite such opposition, the first meters were installed by the Dual Parking Meter Company beginning in July 1935; they cost a nickel an hour, and were placed at 20-foot intervals along the curb that corresponded to spaces painted on the pavement.
The single solution for everything in your air. Many air cleaning systems filter out particles. Some combat germs, and some fight odors. But only the PureAirâ¢ Air Purification System addresses all three types of indoor air pollutants.
Definition: Water filtration is a general term that refers to any type of filtration system or process that is used to filter out particles and/or pollutants from water.Water filtration systems can include activated carbon filters, UV light units, reverse osmosis, water distillers, or other water treatment process.efinition: Water filtration is a general term that refers to any type of filtration system or process that is used to filter out particles and/or pollutants from water.