1
William G Disanza Jr: Separation-chamber means. Bernard J Murphy, June 18, 1985: US04523936 (39 worldwide citation)

The invention comprises a negative-pressure plastic bag leader in the form of a cylindrical chamber into which the plastic bag is received. The chamber is double-walled, an outer wall being imperforate, and the inner wall being foraminous, and the two being spaced apart, in a substantial concentrici ...


2
William G Disanza Jr: Separation-chamber means. David A Jackson, Richard M Goldberg, Barbara L Renda, November 22, 1988: USRE032788

The invention comprises a negative-pressure plastic bag leader in the form of a cylindrical chamber into which the plastic bag is received. The chamber is double-walled, an outer wall being imperforate, and the inner wall being foraminous, and the two being spaced apart, in a substantial concentrici ...