PTO
Wrapper
PDF
|
Dossier
Espace
Google
|
|
Patent
D916257
|
Priority
Aug 22 2019
|
Filed
Aug 22 2019
|
Issued
Apr 13 2021
|
Expiry
Apr 13 2036
|
|
Assg.orig
|
|
Entity
unknown
|
2
|
17
|
n/a
|
|
|
The ornamental design for a heat exchanger for water heater, as shown and described.
|
FIG. 1 is a front view of a heat exchanger for water heater showing our new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 1 with the internal parts omitted; and,
FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 4 with the internal parts omitted.
The broken lines shown in the drawings represent portions of the heat exchanger for water heater that form no part of the claimed design.
Kondo, Masaki, Oohigashi, Takeshi, Wada, Norihide
Patent |
Priority |
Assignee |
Title |
20110017433, |
|
|
|
20140190425, |
|
|
|
20150176861, |
|
|
|
20170059205, |
|
|
|
20170299274, |
|
|
|
20170321970, |
|
|
|
20170350618, |
|
|
|
20180087805, |
|
|
|
20180306529, |
|
|
|
20190186784, |
|
|
|
20190186785, |
|
|
|
20190195563, |
|
|
|
D831805, |
Jun 09 2017 |
Kogaku Technology Inc. |
Vertical heating module |
D832413, |
Jun 09 2017 |
Kogaku Technology Inc. |
Air-duct type heating module |
EP2420756, |
|
|
|
JP2017211115, |
|
|
|
JP60144556, |
|
|
|
Date |
Maintenance Fee Events |
n/a
Date |
Maintenance Schedule |
n/a