SS

Shizuo Sagawa

📍 Shinagawa, JP: #206 of 807 inventorsTop 30%
Overall (All Time): #1,057,865 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5326400 Plug member for use in coating an interior surface of a pipe — 1994-07-05
5253385 Pipeline pig sweeper and sweeper pin — 1993-10-19
5157803 Sweeper — 1992-10-27
4895602 Pipe cleaning method — 1990-01-23
4876761 Pin for sweepers — 1989-10-31