Inventor

HIRAMOTO TSUTOMU

JP4 patents

Patents

4 patents

US4955471ASep 11, 1990

Packaging structure for a ring-shaped product

KONISHIROKU PHOTO IND64 citations93

US4832301AMay 23, 1989

Hanger

KONISHIROKU PHOTO IND96 citations91

US4951167AAug 21, 1990

Magnetic tape cassette with improved front cover supporting mechanism

KONISHIROKU PHOTO IND7 citations70

US5041939AAug 20, 1991

Magnetic tape cassette with leaf-shaped spring door closure mechanism

KONISHIROKU PHOTO IND1 citations49