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How was the Microwave Oven invented, Percy Spencer

10 min readOct 9, 2026

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“I just got hold of a lot of textbooks and taught myself while I was standing watch at night.” Percy Spencer

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Percy Spencer Melts a Chocolate Bar, Invents the Microwave Oven — New England Historical Society

Percy Spencer had only a fifth-grade education, but that didn’t stop him from earning patents crucial to winning World War II — and to cooking dinner in minutes.

Percy Spencer was born July 19, 1894, in Howland, Maine and died September 8, 1969

Howland Fish Bypass Channel, Piscataquis River, Maine

The Devil Is in the Details: Researching an Inventor’s Biography | Lemelson
Howland Fish Bypass Channel, Piscataquis River, Maine — Interfluve

His father died when he was 18 months old, and his mother sent him to live with his aunt and uncle.

Spencer had one older brother, John Alby (“Al”), who was born in Enfield, Maine on May 20, 1892 (some sources list the wrong birthdate for him, too).

Sadly, their father died in 1896, and their mother soon sent the two young boys to be raised separately by other family members. Unfortunately, Percy Spencer’s uncle John, his “second father,” then died when Spencer…

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Rebecca Trocki
Rebecca Trocki

Written by Rebecca Trocki

Lifelong Learner and dedicated servant leader and minion.