|
The ornamental design for a filter unit for intake air of helicopter turbine engines, as shown and described. |
FIG. 1 is a perspective view from top, front and left side showing my new design for a filter unit for intake air of helicopter turbine engines;
FIG. 2 is a side elevational view from the left side thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a side elevational view from the right side thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a top plan view thereof.
The back view thereof is devoid of ornamentation and forms no part of my inventive design.
Patent | Priority | Assignee | Title |
D455438, | Jul 05 2000 | Halltech Systems, Inc. | Air intake system for internal combustion engine |
Patent | Priority | Assignee | Title |
DE151698, | |||
SU715112, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Date | Maintenance Fee Events |
Date | Maintenance Schedule |