Japan. Kokai Tokkyo Koho means "Japanese Patent Bulletin", so the first two digits of the category code: a, 54,076,557 indicate that the Showa year is 54 years (1979), and in the IPDL retrieval system, the Showa year is represented by the letter S, so the digits are S54-076,557, so I found it.
Only online photo browsing. I used zoom up to browse and downloaded all the big pictures of this document into a compressed package, but there is something wrong with your email. I couldn't send it to you by QQ email, so I sent it to the network disk, which is also convenient for others to download.
It was delivered to the other party's mailbox 20 1 1 at 9:3 1 on Friday, July 8th.