4. B - Operations, Transporting
  5. 01
  6. D

Vacuum cleaner

B - Operations – Transporting – 01 – D

Patent

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Details

15/61, 183/75

B01D 50/00 (2006.01)

Patent

CA 484458

Davis Archibald Hunt

B - Operations – Transporting – 01 – D
Inventor

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Hay Charles Newton

B - Operations – Transporting – 01 – D
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Na

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The Apex Electrical Manufacturing Co.

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