PTO
Wrapper
PDF
|
Dossier
Espace
Google
|
|
Patent
D254803
|
Priority
Nov 21 1977
|
Filed
Nov 21 1977
|
Issued
Apr 22 1980
|
Expiry
Apr 22 1994
|
|
Assg.orig
|
|
Entity
unknown
|
10
|
13
|
n/a
|
|
|
The ornamental design for an air circulator, as shown.
|
FIG. 1 is a side elevational view of an air circulator embodying our new
design;
FIG. 2 is a top plan view thereof; and
FIG. 3 is a bottom plan view thereof.
Martin, David A., Rusth, Douglas B.
Patent |
Priority |
Assignee |
Title |
10663192, |
Jan 04 2013 |
|
Vertical vent stack cap |
D262235, |
Aug 22 1979 |
|
Portable air recirculator |
D262313, |
Aug 22 1979 |
|
Portable air recirculator |
D265340, |
Jun 23 1980 |
|
Air recirculator |
D268053, |
Jul 07 1980 |
|
Heat distributor |
D269114, |
Nov 17 1980 |
SPECTRA, INC |
Air circulator |
D276182, |
Sep 30 1982 |
|
Air circulator |
D618784, |
May 12 2008 |
|
Vent pipe using ultraviolet light for purification of discharge gases |
D642669, |
Sep 09 2010 |
|
Vent cap |
D950704, |
Jan 16 2020 |
Walmart Apollo, LLC |
Handle mounted fan guard |
Patent |
Priority |
Assignee |
Title |
1170551, |
|
|
|
2528650, |
|
|
|
3173353, |
|
|
|
3347025, |
|
|
|
3750557, |
|
|
|
3827342, |
|
|
|
3973479, |
Jun 23 1975 |
|
Floor-ceiling air circulating device |
4053732, |
Nov 05 1975 |
|
Portable electric room air heater |
4064203, |
Sep 16 1976 |
Western Magnum Corporation |
Air-circulating device with air freshener, humidifier, and/or deodorizer |
4136606, |
Mar 25 1977 |
KERSHAW, WALTER |
Wall mounted ventilating device |
4152973, |
Sep 16 1977 |
|
Heat energy homogenizer |
FR2275734, |
|
|
|
FR2296818, |
|
|
|
Date |
Maintenance Fee Events |
n/a
Date |
Maintenance Schedule |
n/a