Interesting Inventions – The doorbell

 Original Photo by Takoma Bibelot
Original Photo by Takomabibelot

The electric doorbell was invented by Joseph Henry in 1831.

(I guess there were no:-

Knock Knock
Who’s there?
Isabell.
Isabell who?
Isabell a ding-dong.

… jokes before then.)

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Learn English 2020