Patent search ap:("DIAMOND POWER SPECIALITY") AND inv:"COWEN JOHN C L" Page 1

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发明授权
Retractable cleaning mechanism for boilers and other heat exchangers 失效
Title translation: 锅炉和其他热交换器的伸缩式清洗机构

公开(公告)号：US3377026A

公开(公告)日：1968-04-09

申请号：US52243966

申请日：1966-01-24

Applicant: DIAMOND POWER SPECIALITY

Inventor： DE MART LE ROY S , COWEN JOHN C L

IPC: F28G3/16 , F28G9/00 , F28G15/04

CPC classification number: F28G15/04 , F28G3/16 , F28G9/00

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