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