exist only as provided in the laws of sovereign states, and can be enforced only to the. extent that application has been made and a patent granted covering the territory of an. individual state. Patent rights are limited in duration, with the global standard being 20. years from the date of application. The new product, article of manufacture or process. described in the patent application must be something that has never been previously.
Typically, curtains are made of lighter weight fabric and give your windows a more homey look. There are three basic styles of curtains: panels, cafÃ© and tier; and you'll find variations on each style.
1 Common lengths for standard curtain or drapery panels are 63 inches, 84 inches, 95 inches, 108 inches and 120 inches. 2  Common lengths for tier curtains (also known as cafe cafÃ© curtains or kitchen) tiers are 24 inches and 36.  inches