Wrinkle tube for piping work
Latest DOOBON FLEXIBLE CO., LTD Patents:
Description
The broken lines shown in the drawings are for the purpose of illustrating environment only that form no part of the claim. The dot dash broken line indicates cutoff boundaries for enlarged detailed portion views and form no part of the claim.
Claims
The ornamental design for a wrinkle tube for piping work, as shown and described.
Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D839402
Type: Grant
Filed: Sep 5, 2017
Date of Patent: Jan 29, 2019
Assignee: DOOBON FLEXIBLE CO., LTD (Gimpo-si, Gyeonggi-Do)
Inventor: Hwa-ok Shin (Goyang-si)
Primary Examiner: Eric L Goodman
Assistant Examiner: Amy C Wierenga
Application Number: 29/616,263
Type: Grant
Filed: Sep 5, 2017
Date of Patent: Jan 29, 2019
Assignee: DOOBON FLEXIBLE CO., LTD (Gimpo-si, Gyeonggi-Do)
Inventor: Hwa-ok Shin (Goyang-si)
Primary Examiner: Eric L Goodman
Assistant Examiner: Amy C Wierenga
Application Number: 29/616,263
Classifications
Current U.S. Class:
Pipe, Tubing Or Hose (D23/266)