Everything has a timeline

TiMELiNES

1904

Master key systems spread in large buildings

Layered access arrangements make keyed control scalable across offices, apartments, and institutions.

Canonical milestoneUnited States1 timeline

Context

Appears In

TimelineTimeline of the Key

Position 11

Authority

Sources

Encyclopaedia BritannicaConfidence 94%

Taxonomy

Tags

keybuildingsaccess-control