Sight glass applied in refrigeration system
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Claims
The ornamental design for a sight glass applied in refrigeration system, substantially as shown and described.
4064826 | December 27, 1977 | Pauli |
4888990 | December 26, 1989 | Bryan et al. |
5383338 | January 24, 1995 | Bowsky et al. |
D412454 | August 3, 1999 | Berkelhammer |
6116274 | September 12, 2000 | Ehrlich |
D495265 | August 31, 2004 | Kim |
D519867 | May 2, 2006 | Kim |
7540187 | June 2, 2009 | Dillon |
0866290 | May 2003 | EP |
Type: Grant
Filed: Jan 21, 2009
Date of Patent: Dec 22, 2009
Assignee: Danfoss Tianjin Ltd. (Tianjin)
Inventor: Miao Yan (Tianjin)
Primary Examiner: Antoine D Davis
Attorney: McCormick, Paulding & Huber LLP
Application Number: 29/331,151