Dahlke envelope

English

Etymology

After its designer Benjamin Dahlke. In use in the late 1920s, the name was patented in 1929.

Pronunciation

• IPA^(key): /ˈdɑːlkə ˈɒnvəloʊp/, /ˈdɑːlkə ˈɛnvəloʊp/

Noun

Dahlke envelope (plural Dahlke envelopes)

1. An airmail envelope with a distinct pattern of spaced diamonds in alternating red and blue colours around the outer edge.