These are coat hook hangers for the Reff Profiles cubicle system. Available in two styles by Knoll, Inc.
Reff Profiles™
Reff Profiles - Knoll
Knoll Dividend Coat Hook
Vintage white melamine table by Eero Saarinen for Knoll, 1970s
Reff Profiles™ Height-Adjustable Desks
Reff Profiles™ Height-Adjustable Desks
Reff Profiles - Knoll
Reff Profiles - Knoll
Knoll
Morrison Price List - Knoll
Reff Profiles™ Height-Adjustable Desks
Reff Profiles™ Height-Adjustable Desks
Fine French Art Deco Wrought Iron Coat Rack with an Umbrella and Hat Stand
Mounting a Wall Coat Rack