Patent search ap:("ENGINEERING DEV CORP") AND inv:"UNGER JR GILBERT C" Page 1

1.

发明授权
Apparatus for drying sludge 失效
Title translation: 污泥干燥设备

公开(公告)号：US2279848A

公开(公告)日：1942-04-14

申请号：US32790940

申请日：1940-04-04

Applicant: ENGINEERING DEV CORP

Inventor： UNGER JR GILBERT C

IPC: C02F11/16 , F26B9/10 , F26B11/22

CPC classification number: F26B9/10 , C02F11/16 , F26B11/22

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