Office chair base
Description
Claims
The ornamental design for an office chair base, as shown as described.
Referenced Cited
Patent History
Patent number: D552385
Type: Grant
Filed: Oct 10, 2006
Date of Patent: Oct 9, 2007
Inventor: Sheng-Chang Yeh (Tainan City 70499)
Primary Examiner: Mimosa De
Application Number: 29/267,216
Type: Grant
Filed: Oct 10, 2006
Date of Patent: Oct 9, 2007
Inventor: Sheng-Chang Yeh (Tainan City 70499)
Primary Examiner: Mimosa De
Application Number: 29/267,216
Classifications
Current U.S. Class:
D6/498