Drainage connecting pipe
Description
Claims
The ornamental design for a drainage connecting pipe, as shown.
Referenced Cited
U.S. Patent Documents
| 1629208 | May 1927 | Ernst |
| D347271 | May 24, 1994 | Inda |
| D465012 | October 29, 2002 | Tauzer |
| D469859 | February 4, 2003 | Didone |
| D647598 | October 25, 2011 | Matusche |
| D716417 | October 28, 2014 | Harbour |
| D737409 | August 25, 2015 | Waggoner |
| D750744 | March 1, 2016 | Liljeqvist |
| D755354 | May 3, 2016 | Coronado |
| D755940 | May 10, 2016 | Schulze |
| D770599 | November 1, 2016 | Daughters |
Patent History
Patent number: D816195
Type: Grant
Filed: Aug 16, 2016
Date of Patent: Apr 24, 2018
Assignee: BEIJING RUNDE HONGTU TECHNOLOGY DEVELOPMENT CO. LTD. (Beijing)
Inventor: Runfan Li (Beijing)
Primary Examiner: Eric L Goodman
Assistant Examiner: Amy C Wierenga
Application Number: 29/574,499
Type: Grant
Filed: Aug 16, 2016
Date of Patent: Apr 24, 2018
Assignee: BEIJING RUNDE HONGTU TECHNOLOGY DEVELOPMENT CO. LTD. (Beijing)
Inventor: Runfan Li (Beijing)
Primary Examiner: Eric L Goodman
Assistant Examiner: Amy C Wierenga
Application Number: 29/574,499
Classifications