First window

First window may refer to:

• first broadcast syndication rights for a work
• the post-grant review period for third-party challenge and opposition of a pending patent or trademark
• a wavelength band or transmission window in fibre-optic communications
• the initial 4-6 hour period of ischemic preconditioning, known as classical or early preconditioning, in which a coronary occlusion can limit injuries of a subsequent ischaemia reperfusion in the myocardium

See also

• Second window
• Window (disambiguation)
• Windowing (disambiguation)
• Windows (disambiguation)

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.