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Lrg Silent Phone
You could probably making a bundle of cash making updated ones for cell phones, hehe – Popular Mechanics 1941 – Link.

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.


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Comments

  1. AdamEngelhart says:

    This is actually a historically important device: it’s called a Hush-A-Phone. Back in the bad old days when you got all your phone equipment from The Phone Company, it wasn’t quite clear whether this sort of thing (attaching a third-party device to a telephone) was legal. An AT&T lawyer saw an ad for it in a window and decided to sue. They lost on appeal, clearing the way for Makers to hook up whatever they wanted to their phones.

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