AUTOMATIC OPENING AND CLOSING APPARATUS OF VENTILATION RIDGE

Title:

AUTOMATIC OPENING AND CLOSING APPARATUS OF VENTILATION RIDGE

Document Type and Number:

Japanese Patent JPS62225648

Kind Code:

A

Inventors:

SATO HOICHI

Application Number:

JP6622086A

Publication Date:

October 03, 1987

Filing Date:

March 25, 1986

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC WORKS LTD

International Classes:

E04D13/16; (IPC1-7): E04D13/16

Attorney, Agent or Firm:

Ishida Choshichi

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