Inventor: Jamieson, Richard
Inventor: Fulcher, Richard John
Inventor: Lambert, Harold
Inventor: Craigie, John Maxwell
Inventor: Apps, Darrel A.
Inventor: Heemskerk, Gerardus J. C. M.
Inventor: Heemskerk, Gerardus J. C. M.
Inventor: Tidmore, Ronald D.