However, the Zip cartridge lacks the Bernoulli plate of the earlier product, Radman et al., the Zip cartridge has only one disk in the cartridge in contrast to the two disks in a Bernoulli cartridge (one on either side of the Bernoulli plate).
However, the Zip cartridge lacks the Bernoulli plate of the earlier product, the Zip cartridge has only one disk in the cartridge in contrast to the two disks in a Bernoulli cartridge (one on either side of the Bernoulli plate). Radman et al. is the earlier product.