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    AUSTRALIA

  1. HAWKER DE HAVILLAND
  2. HUGHES

  3. AUSTRIA

  4. HAFNER (Austria/UK)
  5. HB
  6. HB FLUGTECHNIK
  7. HIRTENBERG
  8. HOAC
  9. HOPFNER

  10. BRAZIL

  11. HELIBRAS

  12. CANADA

  13. HELICOP-JET (France, Canada)
  14. HUSKY
  15. HUSSEY

  16. CHINA

  17. HAI
  18. HAIG (Harbin)
  19. HAIG (Hongdu)
  20. HAMC (Harbin)
  21. HMDH (Nanchang, Jiangxi)
  22. HTATC (Huzhou, Zhejiang)

  23. CZECHOSLOVAKIA

  24. HODEK

  25. DENMARK

  26. HAERENS

  27. EGYPT

  28. HELIOPOLIS AIR WORKS
  29. HELWAN AIR WORKS

  30. FINLAND

  31. HEINONEN

  32. FRANCE

  33. HANRIOT
  34. HELICOP-AIR
  35. HELICOP-JET (France, Canada)
  36. HENNION
  37. HERMESPACE
  38. HIRSCH
  39. HUMBERT
  40. HUREL-DUBOIS
  41. HYDROPLUM

  42. GERMANY

  43. HAESSLER-VILLINGER
  44. HALBERSTADT
  45. HALLE
  46. HAMBURGER
  47. HAMBURGER (since 1955)
  48. HANNOVER
  49. HANSA-BRANDENBURG
  50. HANSEATISCHE
  51. HAVERTZ
  52. HEINKEL
  53. HEINKEL (since 1935)
  54. HEINKEL (since 1955)
  55. HELICOPTER TECHNIK MÜNCHEN
  56. HELITRANS
  57. HENSCHEL
  58. HENSCHEL (since 1954)
  59. HIGH PERFORMANCE
  60. HIRTH
  61. HORTEN
  62. HUFFER

  63. GREECE

  64. HAI

  65. HUNGARY

  66. HALLEY

  67. INDIA

  68. HAL
  69. HAL MiG COMPLEX

  70. INTERNATIONAL

  71. HELI-EUROPE

  72. ITALY

  73. HELISPORT

  74. JAPAN

  75. HAGIWARA
  76. HIRO
  77. HITACHI

  78. KOREA, SOUTH

  79. HAN JIN
  80. HYUNDAI

  81. NETHERLANDS

  82. HOLLANDAIR

  83. NORWAY

  84. HØNNINGSTAD

  85. RUSSIA

  86. HAKKEL

  87. SOUTH AFRICA

  88. HELICOPTER MANUFACTURING

  89. SPAIN

  90. HERETER
  91. HISPANO-SUIZA

  92. SWITZERLAND

  93. HÄFELI

  94. UNITED KINGDOM

  95. HAFNER (Austria/UK)
  96. HALTON
  97. HAMPSHIRE
  98. HANDASYDE
  99. HANDLEY PAGE
  100. HANTS & SUSSEX
  101. HARRIS & SHELDON
  102. HARTMAN
  103. HAWKER
  104. HAWKER AIRCRAFT LTD
  105. HAWKER SIDDELEY
  106. HELMY
  107. HENDERSON
  108. HENDY
  109. HESTON
  110. HEWLETT & BLONDEAU
  111. HILLSON
  112. HINKLER
  113. HMPAC
  114. HOOPER
  115. HORDERN RICHMOND
  116. HUMBER
  117. HUNTING
  118. HUNTING FIRECRACKER
  119. HUNTING PERCIVAL

  120. UNITED STATES

  121. HAIG
  122. HAINES
  123. HALL
  124. HALL, ROBERT
  125. HALL, THEODORE P.
  126. HALPIN
  127. HALPIN/HUF
  128. HALSMER
  129. HAMILTON AERO MANUFACTURING COMPANY
  130. HAMILTON AEROSPACE
  131. HAMILTON AIRCRAFT COMPANY
  132. HAMMOND
  133. HANNAFORD
  134. HAPI
  135. HARLOW
  136. HARTMANN
  137. HATZ
  138. HAUFE
  139. HAWK
  140. HAWK INDUSTRIES INC.
  141. HAWKER
  142. HAYDEN
  143. HAYES
  144. HEADBERG
  145. HEATH
  146. HECC
  147. HEGY
  148. HEINRICH
  149. HEINZ
  150. HELI AIR
  151. HELICOM
  152. HELICOPTER ENGINEERING
  153. HELIO
  154. HELIPARTS
  155. HELITECH
  156. HELTON
  157. HENSLEY
  158. HERRICK
  159. HERSE
  160. HEUBERGER
  161. HIGGINS
  162. HILD MARSHONET
  163. HILLBERG
  164. HILLER
  165. HILLER AVIATION INC.
  166. HILL-KEMMAN
  167. HOCKADAY
  168. HOCKER
  169. HOEFELMANN
  170. HOFFMAN
  171. HONDA
  172. HONEY
  173. HOPPI-COPTERS
  174. HORACE KEANE AEROPLANES
  175. HORN
  176. HOSLER
  177. HOWARD
  178. HOWARD AERO INC.
  179. HPA
  180. HPK
  181. HRUBY
  182. HUEY/BULMER
  183. HUFF-DALAND
  184. HUGHES
  185. HUGHES HELICOPTERS
  186. HUGO
  187. HUNT
  188. HUNTINGDON
  189. HURD
  190. HURLEBURT
  191. HURRY
  192. HUTCHINSON
  193. HYNES