Rooftops

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Etherphone Receiver

Description

A special earpiece to hear coded updates.

Novel

Hotel Cosmos

Author

Raymond Z. Gallun

Built

Yes

Year Made

1920s

Companies

Product

Headsets

coming soon

// TECHNOLOGY–SECRETS–WORTH-SHARING PUBLISHED 18.04.21 FILE SIZE 497 KB FILE FORMAT MP4

NAVIGATION

“The best way to keep a secret is to shout it from the rooftops” – Edwin Land

Rooftops