发明授权
US5698166A Scented air freshening device and method of making same 失效
香氛空气清新装置及其制作方法

Scented air freshening device and method of making same
摘要:
An air freshening device is made from a solution of a polymer and a fragrant material, which is applied to an air permeable substrate. A solid fragrant residue is formed on the substrate. A fragrant material diffuses from the residue for scenting flowing through and about the substrate. An attachment is provided for attaching the substrate to an air filter received in a forced air heating, ventilating, and cooling system.
公开/授权文献
信息查询
0/0