SLACK INCORPORATED by PNS & WSS Inc. (Track this)
Intl: (041) Education and entertainment US: 101; 107 Filing date: 01-Apr-1991 Serial number: 74152630
SLACK TUBE by DWYER INSTRUMENTS, LLC (Track this)
Intl: (009) Electrical and scientific apparatus US: 026 Filing date: 21-Sep-1970 Serial number: 72371155