PTO
Wrapper
PDF
|
Dossier
Espace
Google
|
|
Patent
D904589
|
Priority
Aug 22 2019
|
Filed
Aug 22 2019
|
Issued
Dec 08 2020
|
Expiry
Dec 08 2035
|
|
Assg.orig
|
|
Entity
unknown
|
1
|
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; and,
FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 3.
Kondo, Masaki, Oohigashi, Takeshi, Wada, Norihide
Patent |
Priority |
Assignee |
Title |
D936193, |
Jun 30 2020 |
|
Water heat exchanger |
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