Helical anchor
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Description
The broken lines in the drawings illustrate portions of the helical anchor and form no part of the claimed design.
Claims
The ornamental design of a helical anchor, as shown and described.
Referenced Cited
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Patent History
Patent number: D854921
Type: Grant
Filed: Mar 12, 2018
Date of Patent: Jul 30, 2019
Assignee: GRIPPLE LIMITED
Inventor: Thomas Fisher (Sheffield)
Primary Examiner: Sandra S Snapp
Assistant Examiner: Ieisha N Price
Application Number: 29/640,132
Type: Grant
Filed: Mar 12, 2018
Date of Patent: Jul 30, 2019
Assignee: GRIPPLE LIMITED
Inventor: Thomas Fisher (Sheffield)
Primary Examiner: Sandra S Snapp
Assistant Examiner: Ieisha N Price
Application Number: 29/640,132
Classifications
Current U.S. Class:
D8/387;
D8/385