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Brevetti  Canada  1904

 
  • Patent:CA84955 19.01.1904 Howieson, John Thomas (P) : Calculating machine
  • Patent:CA84960 19.01.1904 Lotterhand, Jason (P) : Adding machine for typewriters
  • Patent:CA85050 29.01.1904 Charles Wales : Adding machine
  • Patent:CA85892 08.03.1904 William Henry Jr. Pike Pike Adding Machine Comp. : Printing device for calculating machines
  • Patent:CA86768 26.04.1904 Vermehren, Johannes (P) : Calculating machine
  • Patent:CA87824 14.06.1904 Hermann Eberhardt : Adding machine
  • Patent:CA87825 14.06.1904 Herbert Arthur Hensley : Calculating machine
  • Patent:CA88762 16.08.1904 Hermann Eberhardt : Adding machine
  • Patent:CA90174 22.11.1904 Frank R. Welton : Adding machine
  • Patent:CA90237 29.11.1904 Charles Wales Adder Machine Comp. : Adding machine
  • Patent:CA90396 13.08.1904 Bly, Albert Byron (P) (Railroad Conductor) : Improvements in Calculating Apparatus (Counting Machine)
  • Patent:CA90623 20.12.1904 Stephen S. Drysdale : Adding machine

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