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Crack-cleaning suction attachment for a vacuum cleaner of the upright type having an on-the-floor, downwardly directed, main suction and cleaning nozzle

  • US 3,377,647 A
  • Filed: 03/01/1966
  • Issued: 04/16/1968
  • Est. Priority Date: 03/01/1966
  • Status: Expired due to Term
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