Inventor: Jamieson, Richard
Inventor: Fulcher, Richard John
Inventor: Lambert, Harold
Inventor: Craigie, John Maxwell
Inventor: Tidmore, Ronald D.
Inventor: Dalton, Margaret, Dalton, James
Inventor: McElrea, Laurence E.
Inventor: Zetterlund, Henrik
Inventor: Craigie, John Maxwell, Craigie, Gail Alexis