Patent
   D664830
Priority
Aug 25 2011
Filed
Aug 25 2011
Issued
Aug 07 2012
Expiry
Aug 07 2026
Assg.orig
Entity
unknown
2
26
n/a
The ornamental design for a piston for door closer, as shown and described.

FIG. 1 is a perspective view of a piston for door closer showing our design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view of a door closer with the piston disposed therein.

The broken lines in FIGS. 1-8 are for illustrative purposes only and form no part of the claimed design.

Yang, Ju-Kuan, Yu, Rick

Patent Priority Assignee Title
9790723, Dec 17 2014 DORMAKABA DEUTSCHLAND GMBH Door operator
D925335, Mar 22 2019 Taiwan Fu Hsing Industrial Co., Ltd.; TAIWAN FU HSING INDUSTRIAL CO , LTD Latch
Patent Priority Assignee Title
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 12 2011YU, RICKTAIWAN FU HSING INDUSTRIAL CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0268040889 pdf
Aug 12 2011YANG, JU-KUANTAIWAN FU HSING INDUSTRIAL CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0268040889 pdf
Aug 25 2011Taiwan Fu Hsing Industrial Co., Ltd.(assignment on the face of the patent)
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