Historical clue formulations

• Ancestor of a cell — 2018-11-24
• Obsolescent belt attachment — 2012-09-16
• On-call accessory — 2009-04-04
• Theater annoyance — 2008-08-31
• Paging device — 2007-12-18
• Movie theater annoyance — 2006-10-26
• Doctor's accessory — 1996-08-23
• Pager — 1994-12-16