Today in 1975, US Patent 3895713 A was issued, an invention of Arthur K. Bunnell, assigned to Carling O’Keefe Ltd., for his “Container Cover Structure.” Here’s the Abstract:

A container cover structure for a container in which a plurality of items, typically beer bottles, are situated in separate compartments includes individual seals for each of the separate compartments. The seals are constructed to allow each to be broken for removal of the item from its compartment without breaking the seal of any other compartment.