Patent
   D252767
Priority
Aug 18 1976
Filed
Jan 07 1977
Issued
Aug 28 1979
Expiry
Aug 28 1993
Assg.orig
Entity
unknown
2
4
n/a
The ornamental design for a fan for anti-dust helmet, as shown.

FIG. 1 is a perspective view taken from the top, front, and one side of a fan for an anti-dust helmet showing our new design;

FIG. 2 is a perspective view taken from the bottom, rear, and side opposite that in FIG. 1;

FIG. 3 is an elevational view taken from the side shown in FIG. 1;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a top plan view thereof.

Odell, Raymond, Lowe, Brian A.

Patent Priority Assignee Title
D292823, Jul 12 1985 Housing for a fan
D308416, Aug 21 1987 Solar powered ventilating fan for welding helmets
Patent Priority Assignee Title
3649964,
3963021, Jan 16 1974 British Technology Group Limited Respirators
214376,
231615,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 30 1980RACAL ACOUSTIC SERVICES LIMITEDRacal Safety LimitedASSIGNMENT OF ASSIGNORS INTEREST 0038220271 pdf
Oct 28 1980AMPLIVOX COMMUNICATIONS LIMITED CHANGED TO RACAL ACOUSTIC SERVICES LIMITEDCHANGE OF NAME SEE DOCUMENT FOR DETAILS 0038220279 pdf
Oct 28 1980RACAL ACOUSTIC SERVICES LIMITED CHANGED TO RACAL ACOUSTIC SERVICES LIMITEDCHANGE OF NAME SEE DOCUMENT FOR DETAILS 0038220279 pdf
Oct 28 1980RACAL-AMPLIVOX COMMUNICATIONS LIMITED CHANGED TO RACAL ACOUSTIC SERVICES LIMITEDCHANGE OF NAME SEE DOCUMENT FOR DETAILS 0038220279 pdf
Oct 28 1980RACAL AMPLIVOX LIMITEDRACAL ACOUSTIC SERVICES LIMITEDCHANGE OF NAME SEE DOCUMENT FOR DETAILS 0038220279 pdf
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