daɪˈæɡənəl kəmpɹˈɛsɚz wɜː wˈaɪdli ɛkspˈɛɹɪməntᵻd dˈʊɹɹɪŋ ænd dʒˈʌst ˈæftɚ wˈɜːld wˈɔːɹ ɹˌoʊmən tˈuː, bˌʌt dɪdnˌɑːt sˈiː mˈʌtʃ sˈɜːvɪs jˈuːs.
Diagonal compressors were widely experimented during and just after World War II, but did not see much service use.