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1. The Lekolight was invented in 1933 by Joseph Levy and Edward Kook, founders of Century Lighting, and allegedly based upon a design by Stanley McCandless (see the patent at An Ellipsoidal Reflector Spotlight, it became the industry standard for decades. Just as facial tissue is called Kleenex and photocopiers are called Xerox machines, many people refer to all ERS instruments as "Lekos," regardless of manufacturer. Century Lighting has been purchased many times over the years and today is the product of Strand Lighting who owns the rights to the name Lekolight™, although Strand is currently no longer using the name "Leko" on any of its fixtures. But, that may change soon, as this marketing document suggests.
View attachment 3358
Looks a lot like the recently discontinued SL Coolbeam series, doesn't it?

There have been many, many discussions on ControlBooth about the Leko; here is a recent one: End of the Leko.
See also the Collaborative Article: Ellipsoidal Reflector Spotlight-Ancient History.

Externally, see Edward Kook obituary and

2. A brand of ESD Anit-Static Wrist Strap:

3. A car-sharing service from Swedish company IKEA: .

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