Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
June 20, 2023
0Patent Application Number
171131770
Date Filed
December 7, 2020
0Patent Citations
Patent Primary Examiner
CPC Code
A hollow chamber blocking tool includes: a first blocking tool having a first foamable base material on a first holder plate; and a second blocking tool having a second foamable base material on a second holder plate. The first blocking tool includes a steel plate fixing portion locked to a steel plate. The second blocking tool includes an integrated portion locked to the steel plate fixing portion. The second holder plate includes a rotating portion rotatably connected to the first blocking tool.
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