|
The ornamental design for an exhaust air valve, substantially as shown and described. |
|||||||||||||||||
FIG. 1 is a perspective view of an exhaust air valve in an open position, showing my new design;
FIG. 2 is a perspective view thereof, in a closed position;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a side elevational view thereof; and
FIG. 5 is a top plan view thereof.
| Patent | Priority | Assignee | Title |
| 6739311, | Jun 07 2002 | Theft prevention device | |
| D319683, | Jun 15 1987 | Check valve | |
| D319684, | May 13 1987 | Swing check valve | |
| D320644, | Mar 09 1987 | Swing check valve | |
| D346641, | Oct 26 1992 | Air valve | |
| D362295, | May 25 1994 | Air valve | |
| D739499, | Nov 23 2009 | Goyen Controls Co Pty Limited | Valve diaphragm |
| D758542, | May 05 2015 | BISSEL INC ; BISSELL INC | Valve portion |
| D775313, | Mar 22 2013 | WD RACING OY | Valve disk |
| Patent | Priority | Assignee | Title |
| 2620673, | |||
| 3315585, | |||
| 3951130, | Nov 24 1972 | Thermo-Technical Development Limited | Isolating damper for closing a duct |
| 4059045, | May 12 1976 | MONROE MERCURY ACQUISITON CORPORATION | Engine exhaust rain cap with extruded bearing support means |
| 4103495, | Sep 09 1976 | Richard, Rhode | Flow control device for an irrigation ditch |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jul 23 1982 | Flakt Aktiebolag | (assignment on the face of the patent) | / | |||
| Oct 22 1984 | WIDERBY, LENNART | FLAKT AKTIEBOLAG, A JOINT-STOCK COMPANY OF SWEDEN | ASSIGNMENT OF ASSIGNORS INTEREST | 004325 | /0936 |
| Date | Maintenance Fee Events |
| Date | Maintenance Schedule |