# FOREST RADIO TELEPHONE CO DE — Patents explained on PatentBrief

FOREST RADIO TELEPHONE CO DE has 1 landmark patent explained in plain English on PatentBrief.

- [Lee De Forest's Early Radio Telegraphy System](https://patentbrief.org/patent/us/879532/de-forest-audion-vacuum-tube) — granted 1908
  A 1908 patent by radio pioneer Lee De Forest describing methods for transmitting and receiving wireless telegraphy signals using early vacuum tube technology.

**Full profile:** https://patentbrief.org/company/forest-radio-telephone-co-de

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._