Inventors:
Robert Andrews - Norfolk MA, US
Lawrence Brodsky - Tolland CT, US
Richard Yeomans - Medway MA, US
Italo Desantis - Medway MA, US
Roger Dowd - Franklin MA, US
Alan Kujawski - Webster MA, US
Richard Morrell - Milford MA, US
Charles Negus - Taunton MA, US
Robert Rudko - Holliston MA, US