20. juni 1957

20. juni 1957: 3 companies

PATHFINDER AIR SURVEYS LIMITED Registreringskode: 056277-7 Juridisk adresse: 3363 CARLING AVE, OTTAWA 14, ONTARIO, CANADA, K2H7V6

B & P HALL BROS. LIMITED Registreringskode: 045051-1 Juridisk adresse: 274 PARK STREET, BROWNSBURG, QUEBEC, CANADA, J0V1A0

J. G. KNOWLTON COMPANY LIMITED Registreringskode: 048329-0 Juridisk adresse: 190 COLONNADE ROAD SOUTH, NEPEAN, ONTARIO, CANADA, K2E7J5